Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

[Q]: Question: When gas particles heat up and gain energy, what do they do? Answer: move faster
[A]: When gas particles heat up and gain energy, they move faster. This increases their collisions with each other and their container, causing greater pressure.

[Q]: Question: What takes both the shape and the volume of their container? Answer: gases
[A]: Solids have a fixed volume and a fixed shape. Liquids have a fixed volume but take the shape of their container. Gases take both the volume and the shape of their container.

[Q]: Question: Which form of matter assumes the shape of its container? Answer: gas
[A]:
Gases assume the shape of their container.