Question 1: A measure of the amount of matter in an object Question 2: the force or speed with which something moves

1.momentum
2.collision
3.exert
4.mass
5.velocity

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.