Question

When a substance melts, evaporates or boils, which four of the following things are true for it's particles?

Select four answers.


A. Lose energy

B. Gain energy

C. Move more

D. Move less

E. Become further apart

F. Become closer together

G. Overcome the attractive forces

H. The forces between them hold them more in place

Answer 1

B, C, E, G

Step-by-step explanation:

B - As particles are heated, they gain heat energy (or thermal energy, Q) from whatever the source may be.

C - Thermal energy particles gain is converted into kinetic, and the more KE/kinetic energy particles have, the more energy they have to move around.

E - When particles have more energy to move around more, they slide and move past each other and create more space; hence, they become further apart.

G - Eventually, particles will have enough energy and will move around so much that the attracting forces holding them together in the first place will be lesser than the particle's energy to break free and move from the attractive forces.

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