Question

Matter is composed of:
A. atoms
B. molecules
C. tiny particles
D. all of the above

Answer 1

We know that anything that occupies space and has mass is termed as matter. Some examples of matter are books, pens, chairs, tables, oxygen gas etc. Matter is made of very small particles which are invisible to us.

Complete step by step answer:
Here, we have to identify the composition of matter. We know that all matter is made of substances which are known as elements. Elements possess specific physical and chemical properties and the breaking of them is not possible by ordinary chemical reactions.
Let’s discuss the options one by one. Option A is atom. The smallest unit of matter is an atom which possesses all the chemical properties of an element. So, atoms are composed of matter.
Option B is molecules. A molecule is the group of atoms which are held together by bonds (chemical). So, we can say that matter is also composed of molecules.
Option C is tiny particles. Matter is also composed of very small particles such as negatively charged electrons, positively charged protons etc. So, we can say that matter is also composed of tiny particles.
Hence, the correct option is D.

Note: Based on the force of attraction among particles of matter, classification of matter is done as three types namely, liquid, solid, and gas. The attraction force between solid particles is very high so they have definite shape. The attraction between particles of liquid is less than solid. In case of gaseous particles, attraction force is least and due to this gases do not have specific shape.