Question

which best describes what happens as the particles in a solid gain energy? the particles move more quickly, taking up less space and starting to move closer together into a solid shape. the particles move more slowly, taking up less space and starting to move closer together into a solid shape. the particles move more quickly, taking up more space and spreading out from each other. the particles move more slowly, taking up more space and spreading out from each other.

Explanation:

When particles in a solid gain energy, their kinetic energy increases. This causes them to vibrate more vigorously around their fixed positions. As a result, they take up more space and spread out from each other.

Answer:

The particles move more quickly, taking up more space and spreading out from each other.