Colorado Esthetician Written Practice Exam

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What state of matter has neither a fixed shape nor a fixed volume?

Gas
Liquid
Solid
Vapor

The correct answer is: Gas

A gas is a state of matter that has neither a fixed shape nor a fixed volume. In a gas, the particles are free to move around and take the shape of their container. This makes it different from solids and liquids, which have fixed shapes and volumes. Vapor is technically a gas phase of a substance that is normally a liquid or solid at room temperature, so it can have a fixed volume depending on conditions.