![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/blue-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/purple-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/fade_circle.png)
ICSE /Class 9
Chemistry MCQ Based On Atomic weights and molecular weights
Our free online Chemistry test quiz for Class 9, ICSE will assist you to improve your Chemistry skills on every concept in a fun interactive way.
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/blue-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/fade_circle.png)
![test-your-knowledge](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/test_your_knowledge/laptop_testyourknowledge.png)
Happy students
![img](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/subject/awesome-classes.png)
Awesome classes
ICSE Class 9 Chemistry Atomic weights and molecular weights
|
Think About Molecular Mass!!!
weight
The molecular formula of water is H2O which means that one molecule of water contain 2 atoms of hydrogen and 1 atom of oxygen.
Atoms and molecules
Think about Atomic and Molecular mass
calculate atomic weight first
Think about atomic mass!!!
Molecular mass of CO2 = Molecular mass of carbon + 2 (Molecular mass of oxygen) { 2 atoms of oxygen are present)
Think about atomic mass.
The relative mass of a molecule is expressed as atomic mass units
![](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/test_your_knowledge/banner.png)
At JustTutors, we believe in the power of digital technology to help students get personalized learning and attention from India's best-in-class science, english and math tutors. We are focused on creating a top-class e-learning platform that brings together the best teachers, technology, media, content for creating a seamless and world-class experience for every student.
![Justie](https://www.justtutors.com/assets/images/chatbot_justie.gif)