Select the correct answer.

Which sentence about particles in matter is true?

O A. Atoms are present in solids and liquids but not in gases.

O B. The particles of matter are in constant motion.

OC. The same kinds of atoms are found in different elements.

OD. When a solid changes to a liquid, the sizes of the particles change.

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B. The particles of matter are in constant motion.

Explanation:

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

Out of all choice, "The particles of matter are in constant motion", the sentence about particles in matter is true.

Answer: Option B

Explanation:

The matter is anything that comprises with weight and occupies the space. It happens in three states to be specific, gases, fluids, and solids. All issue is comprised of minor particles that are in steady movement. As indicated by the motor hypothesis of the issue, it is made of numerous particles, i. e. atoms, that are inconsistent movement. In gases, the particles movement is in steady arbitrary movement, they move unreservedly. In fluids, the movement is obliged by the fluid's volume, while in solids the movement of particles is extraordinarily compelled to a little space.