The quantity of matter in an object is called as:

1. mass
2. volume
3. density
4. weight

Which of the following is a kind of man-made matter?

1. Coal
2. Cotton
3. Plastic
4. Silk

Select natural and man-made matter from the following list:

Wood, plastic, silk, medicines, detergents, coal, water, ceramic, cotton, glass, nylon, fruits.

Define matter.