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9th CBSE
IMPORTANT
Earn 100

What is a molecule? Explain with an example.

Important Questions on Atoms and Molecules

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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 55
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.
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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 56

Define atomic mass unit. What is its symbol?

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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 56
Define atomic mass of an element. 
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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Long Answer Type Questions>Q 56
What is meant by saying that 'the atomic mass of oxygen is 16'?
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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQs)>Q 57

The atomicities of ozone, sulphur, phosphorus and argon are respectively:

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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQs)>Q 58
The symbol of a metal element which is used in making thermometers is; 
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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQs)>Q 59
The latin language name of an element is natrium. The English name of this element is:
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9th CBSE
IMPORTANT
Science for Ninth class Part 2 Chemistry>Chapter 3 - Atoms and Molecules>Multiple Choice Questions (MCQs)>Q 60
The atomic theory of matter was proposed by;