Define liquid. Give two examples.

Important Questions on Matter and Its Composition

EASY

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 7

Define gas. Give two examples.

MEDIUM

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 8

Why are liquids and gases called fluids?

MEDIUM

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 9

Define interconversion of states of matter.

HARD

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 9

Why do solids, liquids and gases differ in their physical state?

MEDIUM

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 9

Under what conditions do solids, liquids and gases change their state?

HARD

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 10

Give reason when a stone is dipped in a glass containing some water the level of water rises but when a spoon of sugar is added to it and stirred, the water level does not rise?

HARD

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 10

Give reason: A drop of ink added to water in a glass turns the whole water blue.

EASY

7th ICSE

IMPORTANT

Concise Chemistry Middle School for Class 7>Chapter 1 - Matter and Its Composition>EXERCISE>Q 11

The molecules are made up of _____.