MEDIUM
9th CBSE
IMPORTANT
Earn 100

Give difference between an atom and an ion.

Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 13
Differentiate between cation and an anion.
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 14

What is mean by:

Molecular mass

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 14

What is meant by chemical formula?

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 14

What is mean by :

Mole
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 15
Give the main postulates of Dalton's atomic theory.
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 16
Explain giving a suitable example: Law of conservation of mass.
EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 16

Explain giving a suitable example.

Law of constant proportions.

EASY
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 3 - Atoms and Molecules>CHAPTER TEST>Q 17

Give the formula of the following compound:

Magnesium bicarbonate.