Question

Which sentence about particles in matter is true? A. Atoms are present in solids and liquids but not in gases. B. The particles of matter are in constant motion. C. The same kinds of atoms are found in different elements. D. When a solid changes to a liquid, the sizes of the particles change.

Answer 1

Particles in matter are in constant motion. Even particles in solids are in constant motion.

Answer 2

The particles of matter are in constant motion: This is true.

Step-by-step explanation:

All matters are made up of atoms. There can be molecule in them, but again they are made up of atoms. Atoms are present in solids, liquids as well as gas.

The atoms in different elements are different from each other. Different elements have atom of different number of protons in them.

The particles of matter are in constant motion: This is true.