HARD
7th CBSE
IMPORTANT
Earn 100

Define element, compound and mixture.

Important Questions on Physical and Chemical Changes
EASY
7th CBSE
IMPORTANT
What name has been given to the smallest unit of particles of a matter?

MEDIUM
7th CBSE
IMPORTANT
Is this true that ‘different kind of substances is made of different kind of atoms”? say yes or no?

MEDIUM
7th CBSE
IMPORTANT
A substance made of only one kind of atom is called an _____.

HARD
7th CBSE
IMPORTANT
A molecule of an element includes only _____ kind of atoms. (two / one / three)

MEDIUM
7th CBSE
IMPORTANT
Dissimilar atoms join chemically to form a molecule of a _____.

MEDIUM
7th CBSE
IMPORTANT
A molecule of a compound includes atoms of _____ or more kinds

HARD
7th CBSE
IMPORTANT
An element is a group of _____ atoms. (similar/ dissimilar)

HARD
7th CBSE
IMPORTANT
A compound is a group of _____ atoms. (same / different)
