Question

what happens to the molecules when heat is applied?
they move slower and further away
they move slower and closer together
they move faster and closer together
they move faster and further away
question 2
1 pts
what happens to volume as molecules move faster?
it increase because molecules are moving closer to each other
it decreases because molecules are moving closer to each other
it increases because the molecules are moving away from each other
it decreases because molecules are moving away from each other

Explanation:

When heat is applied, molecules gain kinetic energy. Kinetic energy is related to the speed of movement of molecules. So, they move faster. Also, as they gain energy, they tend to move apart (further away) due to increased motion. For the volume question, when molecules move faster (and further apart as per the first part), the space they occupy (volume) increases.

Answer:

For the first question: they move faster and further away.
For the second question: It increases because the molecules are moving away from each other.