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

B. The particles of matter are in constant motion.

Answer 2

B. The particles of matter are in constant motion.

Step-by-step explanation:

The particles of matter are always in constant motion at different speeds when exposed to certain temperatures.