Question

the particles of an object are packed tightly together and are vibrating. when the object is heated, the particles start to move faster and slide past each other. this is an examples of

Answer 1

This is an example of state change from solid to liquid.

Answer 2

A solid melting.

A solid has closely packed particles that only vibrate in place. When the object is heated, the particles start to gain energy, moving faster and sliding past one another. A liquid has particles that move around, slide past one another, and take the shape of the container. Thus, this is the change from a solid to a liquid, also known as a solid melting.