the first step would be gathering information , and making sure its correct
Density is defined as [mass] / [volume] .
The only choice listed with those physical dimensions is 'd' .
<span>1. No energy is gained or lost when molecules collide.
2. The molecules in a gas take up a negligible (able to be ignored) amount of space in relation to the container they occupy.
3. The molecules are in constant, linear motion.</span>
Answer:

Explanation:
Speed = Distance / Time
So, to find distance, we actually divide distance by rime.
Answer:
They are gaining energy, can move and slide past each other.
Explanation:
Because as ice melts, the molocules gain energy/heat which warm them up and are able to slide/move apart from each other.