Discover our tutors in your city and overseas

191352 tutors available

Excellent (4.7)

1.9 million student reviews

The list of tutors

Aditya

, India (face-to-face &online)

I am engineering student who is willing to give classes in board chemistry and physics in a fun way

S$11/h
1^st lesson free

Shilpa

Rickmansworth, United Kingdom (face-to-face &online)

Super science tutor gcse biology chemistry and physics in greater london/hertfordshire border

S$55/h
1^st lesson free

Jaseer

Peruvallur, India (online)

To work with a highly esteemed institution which gives me a platform to use my expertise and skills for mutual growth and benefit of our institution and myself.

S$6/h
1^st lesson free

Sibusiso

Randburg, South Africa (face-to-face &online)

Science graduate offering math, physics and chemistry lesson in south africa, johannesburg.

S$14/h
1^st lesson free

Gaven

Birtley, United Kingdom (face-to-face &online)

Industrial chemist with 16 years developing chemical products for various businesses throughout the world

S$19/h
1^st lesson free

Sanjay b

Hunasagi, India (face-to-face &online)

A doctor teaches you the beauty of chemistry beautifully for high school students.

S$3/h
1^st lesson free

Abhijit

Ghatkesar, India (face-to-face &online)

Learn maths and science in a fun way without any struggles in ghatkesar hyderabad.

S$5/h
1^st lesson free

Purnendu

Kolkata, India (face-to-face &online)

We all say maths . i think it is short of mathematics .

S$8/h
1^st lesson free

Desam

, United Kingdom (face-to-face &online)

Audio visual representation of chemistry teaching >1. sub-topics of chemistry viz..organic, inorganic and physical chemistry

S$52/h
1^st lesson free

Yasmine

Orlando, United States (online)

Chemistry graduate student offering chemistry lessons in orlando with 4 years experience

S$15/h
1^st lesson free

Soniya

Noida, India (face-to-face &online)

A student in engineering gives tution to class 11th and 12th of biology and chemistry.

S$13/h
1^st lesson free

Tejashwini

Riverstone, Australia (face-to-face &online)

Wollongong pre-medicine student gives chemistry lessons to high school students helping them with hsc course work and assignments

S$18/h
1^st lesson free

Rajasekaran

Anupuram, India (face-to-face &online)

A true education empowers, emancipates and leads to productive and protective life

S$7/h
1^st lesson free

Vishek

Mumbai, India (face-to-face &online)

Student in engineering school teaches chemistry in a very unique and interesting way

S$10/h
1^st lesson free

Akshay

Noida, India (face-to-face &online)

College graduate in architecture gives pcm lessons till secondary school students in noida

S$7/h
1^st lesson free

Hassan

Middlesbrough, United Kingdom (face-to-face &online)

Engineering student offering maths and chemistry in newcastle,london and middlesbrough i have a qualification of bachelors of engineering in civil.i can teach maths as well as chemistry and other subj

S$19/h
1^st lesson free

Aman

Sandy Bay, Australia (face-to-face &online)

I’m a registered pharmacist. i pursued pharmacy because i was passionate about chemistry.

S$27/h
1^st lesson free

S senthil

Theni Allinagaram, India (online)

To purpose a challenging career in an organization, where i can contribute to the growth of organization and intensify my technical personal and team development skills.

S$6/h
1^st lesson free

Tom

York, United Kingdom (face-to-face &online)

Recent chemistry masters graduate specializing in organic chemistry to tutor in sheffield

S$26/h
1^st lesson free

Nooruddin

Pune, India (face-to-face &online)

Engineering student with strong mathematics background looking for students with maths fear to kill and overcome once for all!!

S$8/h
1^st lesson free

Om prakash

Lucknow, India (online)

A challenging career that will enable me to exhibit my professional competency to the zenith and will enable me to expose my talent to the maximum, to reach the heights of success

S$9/h
1^st lesson free

Manoj

Mumbai, India (online)

An efficient, dedicated, proven and passionate teacher with a rich experience of 28 years pivoting around preparing students of std xi & xii, not only for the board exams but also in various competiti

S$7/h
1^st lesson free

Mrs vineet

New Delhi, India (online)

To strive for excellence in an environment that will enhance my knowledge and career, where i can perform my teaching skills according to my strong calibre and efficiency and provide a learning enviro

S$7/h
1^st lesson free

Meghal

Douglas, Australia (face-to-face &online)

James cook university medical student interested in tutoring for chemistry and biology

S$18/h
1^st lesson free

K muniyasamy

Manamadurai, India (online)

To associate myself with an organization that values quality work, wherein i can utilize my expertise to take challenges and willing to walk the extra miles to achieve excellence.

S$9/h
1^st lesson free

Qayamul

Patna, India (face-to-face &online)

M.tech student in jadavpur university,passionate towards teaching maths ,electronics,physics and chemistry with an extra edge

S$4/h
1^st lesson free

John

Norwich, United Kingdom (face-to-face &online)

Experienced chemistry teacher (advanced skills teacher) up to a level available in norwich

S$43/h
1^st lesson free

Kevin

London, United Kingdom (online)

Computer engineering student offering help on computer science, math, physics and chemistry from basics to college level - online

S$17/h
1^st lesson free

Priyanka

Thorold, Canada (face-to-face &online)

Chemistry makes the world run in all angles. chemistry tuition now available in st catharines by a bsc biochemistry student.

S$19/h
1^st lesson free

Henry

Mansfield, United States (face-to-face &online)

English teacher with 3 years experience will teach english, math, or science in mansfield ga

S$19/h
1^st lesson free

Anukul

Noida, India (face-to-face &online)

Giving tutions to 9th and 10th standard student for maths and science.

S$7/h
1^st lesson free

Amedeus

New York, United States (online)

Tutor with 6 years experience in who is highly motivated for teaching.

S$13/h
1^st lesson free

Madian

Piara Waters, Australia (face-to-face &online)

Research chemist gives chemistry lessons to high school and uni students in australia

S$27/h
1^st lesson free

Patricia

Baltimore, United States (face-to-face &online)

Need something explained? fun and experienced math, science and test prep tutor here!

S$64/h
1^st lesson free

Sohel

Folsom, United States (face-to-face &online)

Electrical engineer with over 30 years of teaching experience in science, math, engineering and business classes in the folsom/edh area

S$51/h
1^st lesson free

Heather

Stafford, United States (face-to-face &online)

Math and science tutor with over 7 years experience specializing in high school math, science, and exam prep (act/sat)

S$64/h
1^st lesson free

Daehurn

London, United Kingdom (face-to-face &online)

Chemistry tutor : can teach a-level, gcse to reach for an a* / 9

S$17/h
1^st lesson free

Theodore

Montreal, Canada (face-to-face &online)

Second-year university student offering tutoring in mathematics, chemistry, history, us government, or geography for middle and high school students in montreal.

S$16/h
1^st lesson free

Himani

Rohtak, India (face-to-face &online)

Masters in chemistry giving tutions for high school upto csirnet level in delhi ncr

S$7/h
1^st lesson free

Dillan

Southampton, United Kingdom (online)

Biomedical engineer with 5 years of teaching experience for both o and a levels

S$17/h
1^st lesson free

Sounak

Vadodara, India (face-to-face &online)

Class 10th to b.sc. 1st year. want to scientifically study chemistry & biology ? in your city vadodara , taught by 2nd year b.sc. chemistry student. do join for a true learning experience !

S$4/h
1^st lesson free

Gourav

Jalandhar, India (face-to-face &online)

I can teach chemistry till class12 if anyone wants to join contact me.

S$2/h
1^st lesson free

Sandip

Kalpakkam, India (face-to-face &online)

Make chemistry learning easier than before. i am here for your service.

S$13/h
1^st lesson free

Subhajit

Jorhat, India (face-to-face &online)

Chemistry is the key to admission to any medical and engineering colleges. i believe in concept building of each topic taught by me so that the students can just play with the subject

S$3/h
1^st lesson free

Mahendra

Mysuru, India (face-to-face &online)

Teaching chemistry and natural science for +1,+2 and teach chemistry neet ,kvpy,jee and aipmt

S$10/h
1^st lesson free

Wajahat

Newcastle upon Tyne, United Kingdom (face-to-face &online)

Msc mechanical engineering uk graduate experienced academic tutor offering to teach maths and physics courses.

S$16/h
1^st lesson free

Nanditha

Thrissur, India (face-to-face &online)

An engineering graduate who wants to teach subjects for 7-10 std students

S$9/h
1^st lesson free

Smita

New Town, India (face-to-face &online)

Post graduate student from science background can give tuitions to anybody from class 1 to 12 or even to science graduates

S$4/h
1^st lesson free

Kuntal

Kolkata, India (face-to-face &online)

Math and chemistry from class ix to class xii.. any board in kolkata

S$3/h
1^st lesson free

Soufia

Sheffield, United Kingdom (online)

Want to get a 9 in maths at gcse, then you are at the right place. online tutoring available for gcse students all around england

S$17/h
1^st lesson free

Sweta

Nottingham, United Kingdom (face-to-face &online)

Phd student at nottingham university offering chemistry lessons upto a level in nottingham. have teaching experience of cambridge international, ibdp, cbsc and icse board.

S$35/h
1^st lesson free

Shivangi

Surat, India (online)

Professional e-tutor tutoring students from all over the world with the experience of 4 years+

S$15/h
1^st lesson free

Rishika

Kolkata, India (online)

Bca student gives tutions in maths and chemistry to high school students.

S$7/h
1^st lesson free

Ruth

Barnsley, United Kingdom (online)

Ast and specialist leader of education offering gcse science, exam technique and learning to learn

S$43/h
1^st lesson free

Brenda

Fairy Meadow, Australia (face-to-face &online)

Geology student at the university of wollongong i also work as an intern at the wollongong science space where i interact with primary and secondary students on a daily basis. i can teach all science

S$29/h
1^st lesson free

Chandni

Ludhiana, India (online)

Mba, b.ed.(science, english), b.sc. (medical), experienced full-time online tutor for chemistry, biology, english, hindi, punjabi

S$5/h
1^st lesson free

Alisha

Germantown, United States (face-to-face &online)

Experienced maths and chemistry tutor, taught over 150 students in the last 5 years.

S$64/h
1^st lesson free

Todun

Sketty, United Kingdom (face-to-face &online)

Materials engineering student giving maths tutoring up to a2 level in swansea

S$24/h
1^st lesson free

Shubham

Patna, India (online)

Teaching concepts of all branch of subjects till std 10th i.e. physics, chemistry, biology, maths, geography, economics and polity

S$13/h
1^st lesson free

Faizan

Truganina, Australia (face-to-face &online)

An engineer to give lessons for math in melbourne with super perfection

S$27/h
1^st lesson free

Sidra

Plano, United States (online)

Chemistry professor with 3 years of experience with high school students, teaches chemistry course work.

S$45/h
1^st lesson free

Harsh

Gurugram, India (face-to-face &online)

Get trained by an iitian, strengthen your understanding........ 1st class free. also available for home coaching on selective weekends.

S$7/h
1^st lesson free

Matthew

Liverpool, United Kingdom (face-to-face &online)

Chemical engineering student, happy to teach up to and including a-level maths, physics and chemistry in and around the liverpool area

S$17/h
1^st lesson free

Brina

Watford, United Kingdom (face-to-face &online)

Lessons for gcse maths and science in watford by sixth form student

S$21/h
1^st lesson free

Samuel

Newquay, United Kingdom (face-to-face &online)

Qualified science teacher in an outstanding academy in st austell, cornwall. specialist in sports and exercise nutrition and physiology.

S$24/h
1^st lesson free

San

Bedford, United Kingdom (face-to-face &online)

A young academic who has just completed his a levels offering tuitions for maths, chemistry and biology up to as level.

S$21/h
1^st lesson free

Kizzie

Maresfield, United Kingdom (face-to-face &online)

A level student offering maths lessons for primary school and gcse student in east sussex

S$26/h
1^st lesson free

Sharmarke

London, United Kingdom (face-to-face &online)

Petrolium engeneering student willing to teach physics chemistry ,math, to gcse level

S$21/h
1^st lesson free

Nurul

London, United Kingdom (online)

A graduate with a first class degree in pahrmaceutical sciences. willing to share my knowledge of science to pupils in primary and secondary school

S$26/h
1^st lesson free

Giselle

Kingston upon Thames, United Kingdom (face-to-face &online)

Biology, chemistry and maths tutoring , kingston upon thames, second year medical student at ucl

S$35/h
1^st lesson free

Rishabh

Guwahati, India (online)

Online tutor for physics, chemistry and maths for clearing all your doubts related to boards and entrance examinations

S$7/h
1^st lesson free

Maclus

Toronto, Canada (online)

Physics and mathematics teachers are the most respected personnel in nairobi since those who who degree don't carry books to classes.

S$19/h
1^st lesson free

Ronald

Seaholme, Australia (face-to-face &online)

I teach chemistry in nairobi kenya am a trained chemist and an analyst

S$452/h
1^st lesson free

Megan

Cedar Park, United States (face-to-face &online)

I am an austin based tutor here to help with your chemistry problems.

S$24/h
1^st lesson free

Gaurav

Bengaluru, India (face-to-face &online)

Simplifying learning - experiential, engaging and enjoyable. bookish to practical knowledge of physics

S$11/h
1^st lesson free

Rebecca

Kurunjang, Australia (face-to-face &online)

Rmit engineering student to give maths and science lessons to high school students

S$18/h
1^st lesson free

Yliana

Saskatoon, Canada (face-to-face &online)

Materials science & engineering professor with more than 5 years of experience (student-focused philosophy)

S$23/h
1^st lesson free

Shagufta pathan

Pune, India (face-to-face &online)

Easy methods, will help u to boost your confidence in maths .

S$4/h
1^st lesson free

Meghna

Allahabad, India (face-to-face &online)

Bsc student from allahabad and desire to teach students till class 10.i am particularly have command in physics ,chemistry and mathmatics.i believe in conceptual study rather than learning. understand

S$4/h
1^st lesson free

Govind

Ernakulam, India (face-to-face &online)

Tuition needed ? a teacher is ready to class for students till high school in kerala !!! (physics & maths & chemistry)

S$9/h
1^st lesson free

Oliver

Newton, United Kingdom (face-to-face &online)

Chemistry graduate offering gcse and a-level chemistry and maths lessons in swansea

S$21/h
1^st lesson free

Britney

Dianella, Australia (face-to-face &online)

University of western australia student giving maths lessons, focused on algebra and statistics

S$18/h
1^st lesson free

Christopher

Safety Bay, Australia (face-to-face &online)

Former biomedical research scientist, currently residing in safety bay. looking to put my phd to use.

S$27/h
1^st lesson free

Sam

Herne Bay, United Kingdom (face-to-face &online)

Chemistry, maths and sciences tutor up to a level and some undergraduate

S$31/h
1^st lesson free

Anil

Guntur, India (face-to-face &online)

Smart work will give more result and avoid hard work encourage smart

S$4/h
1^st lesson free

Jamie

Bangor, United Kingdom (face-to-face &online)

Phd student, studying chemistry, can give chemistry and maths lessons to any level of qualification.

S$35/h
1^st lesson free

Rana mubasher

, United Kingdom (face-to-face &online)

Teaching by reknown trainer of national and international organizations. master and lead trainer

S$346/h
1^st lesson free

Alistair

Sway, United Kingdom (face-to-face &online)

Bsc student offering gcse maths and science tuition around hampshire and dorset

S$26/h
1^st lesson free

David

Little Rock, United States (face-to-face &online)

Ph.d biochemist as biology and chemistry tutor in little rock arkansas area

S$26/h
1^st lesson free

Prapti

Bengaluru, India (online)

Chemistry made simple! research-backed teaching, personalized guidance, and engaging lessons to help students understand, enjoy, and excel in science.

S$7/h
1^st lesson free

Gokul

Devakottai, India (face-to-face &online)

Graduate and teacher in chemistry with msc degree. technical in subject with good experience of 6 years.

S$7/h
1^st lesson free

Dan

Bristol, United Kingdom (online)

Medicine graduate @ university of bristol - medicine interview coaching and prep, medicine personal statement reviews, ks3 & 11+ maths tuition available, 30 minute to 1 hour+ sessions and mock interv

S$35/h
1^st lesson free

Benjamin

Cape Town, South Africa (face-to-face &online)

Engineering undergrad student. maths, physics and chem for caps, ieb and ig/a levels. online classes available.

S$16/h
1^st lesson free

Jahnavi

, India (online)

Jntu graduate, have been giving charity classes as a volunteer since 1 year. strong in mathematics, physics and chemistry. can also teach programming languages.

S$7/h
1^st lesson free

Asish

Keralassery, India (online)

Phd scholar in physics with lectureship and 8 years home tutoring experience

S$7/h
1^st lesson free

Jacky

Edinburgh, United Kingdom (face-to-face &online)

I have a phd in chemistry. i have over 6 years experience in teaching chemistry and science in universities and high schools.

S$69/h
1^st lesson free

Pavithra

Tirupathur, India (face-to-face &online)

Easy learning ,understandable methodology, increased grasping power,fun and active methodology,enhance skills, interesting

S$11/h
1^st lesson free

Abubakar

Karonmajigi, Nigeria (face-to-face &online)

Skytech international online and home tutor from primary to secondary levels. we have excellent methodology and flexibility in teaching and learning processes.

S$3/h
1^st lesson free

Md abu shahyn islam

Aligarh, India (face-to-face &online)

Graduate in chemistry from aligarh muslim university of india and post graduate in physical chemistry from aligarh muslim university of india.

S$11/h
1^st lesson free

Ankit

Rajasthan, India (face-to-face &online)

I have 11+ years experience and i am able to qualify olympiads and neet to students

S$20/h
1^st lesson free

Ashish

Parbhani, India (online)

Best teacher for maths. clear your each and every doubt and lot of practice

S$11/h
1^st lesson free

Suleiman

Kaduna, Nigeria (face-to-face &online)

Chemistry is all about what's occurring in our surrounding in all oo

S$0/h
1^st lesson free

Essential information about your chemistry lessons
✅ Average price :	S$18/h
✅ Average response time :	2h
✅ Tutors available :	191352
✅ Lesson format :	Face-to-face or online

Back

Forward

What do you want to learn?

Discover our tutors in your city and overseas

191352 tutors available

The list of tutors

I am engineering student who is willing to give classes in board chemistry and physics in a fun way

Super science tutor gcse biology chemistry and physics in greater london/hertfordshire border

To work with a highly esteemed institution which gives me a platform to use my expertise and skills for mutual growth and benefit of our institution and myself.

Science graduate offering math, physics and chemistry lesson in south africa, johannesburg.

Industrial chemist with 16 years developing chemical products for various businesses throughout the world

A doctor teaches you the beauty of chemistry beautifully for high school students.

Learn maths and science in a fun way without any struggles in ghatkesar hyderabad.

We all say maths . i think it is short of mathematics .

Audio visual representation of chemistry teaching >1. **sub-topics of chemistry viz..organic, inorganic and physical chemistry**

Chemistry graduate student offering chemistry lessons in orlando with 4 years experience

A student in engineering gives tution to class 11th and 12th of biology and chemistry.

Wollongong pre-medicine student gives chemistry lessons to high school students helping them with hsc course work and assignments

A true education empowers, emancipates and leads to productive and protective life

Student in engineering school teaches chemistry in a very unique and interesting way

College graduate in architecture gives pcm lessons till secondary school students in noida

Engineering student offering maths and chemistry in newcastle,london and middlesbrough i have a qualification of bachelors of engineering in civil.i can teach maths as well as chemistry and other subj

I’m a registered pharmacist. i pursued pharmacy because i was passionate about chemistry.

To purpose a challenging career in an organization, where i can contribute to the growth of organization and intensify my technical personal and team development skills.

Recent chemistry masters graduate specializing in organic chemistry to tutor in sheffield

Engineering student with strong mathematics background looking for students with maths fear to kill and overcome once for all!!

A challenging career that will enable me to exhibit my professional competency to the zenith and will enable me to expose my talent to the maximum, to reach the heights of success

An efficient, dedicated, proven and passionate teacher with a rich experience of 28 years pivoting around preparing students of std xi & xii, not only for the board exams but also in various competiti

To strive for excellence in an environment that will enhance my knowledge and career, where i can perform my teaching skills according to my strong calibre and efficiency and provide a learning enviro

James cook university medical student interested in tutoring for chemistry and biology

To associate myself with an organization that values quality work, wherein i can utilize my expertise to take challenges and willing to walk the extra miles to achieve excellence.

M.tech student in jadavpur university,passionate towards teaching maths ,electronics,physics and chemistry with an extra edge

Experienced chemistry teacher (advanced skills teacher) up to a level available in norwich

Computer engineering student offering help on computer science, math, physics and chemistry from basics to college level - online

Chemistry makes the world run in all angles. chemistry tuition now available in st catharines by a bsc biochemistry student.

English teacher with 3 years experience will teach english, math, or science in mansfield ga

Giving tutions to 9th and 10th standard student for maths and science.

Tutor with 6 years experience in who is highly motivated for teaching.

Research chemist gives chemistry lessons to high school and uni students in australia

Need something explained? fun and experienced math, science and test prep tutor here!

Electrical engineer with over 30 years of teaching experience in science, math, engineering and business classes in the folsom/edh area

Math and science tutor with over 7 years experience specializing in high school math, science, and exam prep (act/sat)

Chemistry tutor : can teach a-level, gcse to reach for an a* / 9

Second-year university student offering tutoring in mathematics, chemistry, history, us government, or geography for middle and high school students in montreal.

Masters in chemistry giving tutions for high school upto csirnet level in delhi ncr

Biomedical engineer with 5 years of teaching experience for both o and a levels

Class 10th to b.sc. 1st year. want to scientifically study chemistry & biology ? in your city vadodara , taught by 2nd year b.sc. chemistry student. do join for a true learning experience !

I can teach chemistry till class12 if anyone wants to join contact me.

Make chemistry learning easier than before. i am here for your service.

Chemistry is the key to admission to any medical and engineering colleges. i believe in concept building of each topic taught by me so that the students can just play with the subject

Teaching chemistry and natural science for +1,+2 and teach chemistry neet ,kvpy,jee and aipmt

Msc mechanical engineering uk graduate experienced academic tutor offering to teach maths and physics courses.

An engineering graduate who wants to teach subjects for 7-10 std students

Post graduate student from science background can give tuitions to anybody from class 1 to 12 or even to science graduates

Math and chemistry from class ix to class xii.. any board in kolkata

Want to get a 9 in maths at gcse, then you are at the right place. online tutoring available for gcse students all around england

Phd student at nottingham university offering chemistry lessons upto a level in nottingham. have teaching experience of cambridge international, ibdp, cbsc and icse board.

Professional e-tutor tutoring students from all over the world with the experience of 4 years+

Bca student gives tutions in maths and chemistry to high school students.

Ast and specialist leader of education offering gcse science, exam technique and learning to learn

Geology student at the university of wollongong i also work as an intern at the wollongong science space where i interact with primary and secondary students on a daily basis. i can teach all science

Mba, b.ed.(science, english), b.sc. (medical), experienced full-time online tutor for chemistry, biology, english, hindi, punjabi

Experienced maths and chemistry tutor, taught over 150 students in the last 5 years.

Materials engineering student giving maths tutoring up to a2 level in swansea

Teaching concepts of all branch of subjects till std 10th i.e. physics, chemistry, biology, maths, geography, economics and polity

An engineer to give lessons for math in melbourne with super perfection

Chemistry professor with 3 years of experience with high school students, teaches chemistry course work.

Get trained by an iitian, strengthen your understanding........ 1st class free. also available for home coaching on selective weekends.

Chemical engineering student, happy to teach up to and including a-level maths, physics and chemistry in and around the liverpool area

Lessons for gcse maths and science in watford by sixth form student

Qualified science teacher in an outstanding academy in st austell, cornwall. specialist in sports and exercise nutrition and physiology.

A young academic who has just completed his a levels offering tuitions for maths, chemistry and biology up to as level.

A level student offering maths lessons for primary school and gcse student in east sussex

Petrolium engeneering student willing to teach physics chemistry ,math, to gcse level

A graduate with a first class degree in pahrmaceutical sciences. willing to share my knowledge of science to pupils in primary and secondary school

Biology, chemistry and maths tutoring , kingston upon thames, second year medical student at ucl

Online tutor for physics, chemistry and maths for clearing all your doubts related to boards and entrance examinations

Physics and mathematics teachers are the most respected personnel in nairobi since those who who degree don't carry books to classes.

I teach chemistry in nairobi kenya am a trained chemist and an analyst

I am an austin based tutor here to help with your chemistry problems.

Simplifying learning - experiential, engaging and enjoyable. bookish to practical knowledge of physics

Rmit engineering student to give maths and science lessons to high school students

Materials science & engineering professor with more than 5 years of experience (student-focused philosophy)

Audio visual representation of chemistry teaching >1. sub-topics of chemistry viz..organic, inorganic and physical chemistry