MEDIUM
7th CBSE
IMPORTANT
Earn 100

Why is Na used as the symbol for sodium?

Important Questions on Matter Around Us

MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 6
How is a molecule of an element different from a molecule of a compound?
MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 7
What is sublimation?
MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 1
Compounds are impure substances.
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7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 2
The atomicity of hydrogen molecule is two.
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7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 3
Symbols represent the molecule of an element.
MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 4
The number of atoms in a formula is written in super-script.
MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 5
All metals are malleable and ductile.
MEDIUM
7th CBSE
IMPORTANT
Focus Science Social Science Class 7 Term I>Chapter 3 - Matter Around Us>Evaluation>Q 1
Explain the effect of heat on the three states of matter, starting with a solid.