Solve this riddle.
I am a substance that is all around you but you do not see me.
I am a substance that enters you many times a minute.
I am a substance without which you cannot live.
What am I? (Hint: Take a deep breath and think.)

What is meant by 'enters you many times a minute'?

Solve this riddle.
I am a substance that is all around you but you do not see me.
I am a substance that enters you many times a minute.
I am a substance without which you cannot live.
What am I? (Hint: Take a deep breath and think.)

Is this substance a solid, a liquid or a gas? 
                 

Build up your vocabulary! Read the meaning and give two examples:

Miscible in water: something that mixes easily with water
Examples of miscible substances _____

Build up your vocabulary! Read the meanings and give two examples in the space given:

Flammable fabric: a fabric that catches fire easily
Examples of flammable fabrics: _____.

Build up your vocabulary! Read the meanings and give two examples in the space given:

Fragile object: an object that gets broken easily

Examples of fragile objects: _____

Build up your vocabulary! Read the meanings and give two examples in the space given:

Edible object: something that can be eaten
Examples of edible objects: _____.

Complete the table. Write the different materials that each object can be made up of. If more than one material can be used, list them all.

Complete the table. Write the different materials that each object can be made up of. If more than one material can be used, list them all.

Complete the table. Write the different materials that each object can be made up of. If more than one material can be used, list them all.