What is a gas?

The video tutorial explains the nature and behavior of gases, highlighting common gases like oxygen, helium, and carbon dioxide. It defines gases as a state of matter distinct from solids and liquids, characterized by energetic molecules that move freely and fill their containers. The tutorial discusses how gases change shape and volume when placed in different containers, and how they can be compressed. It also illustrates these concepts using examples like aerosol cans and fizzy drinks, where gases expand and escape when released.

What are the three common gases mentioned in the text?

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How does a gas change when placed in a larger container?

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What allows gases to be compressed into a smaller space?

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What is the defining feature of a gas related to its volume?

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Describe what happens when a fizzy drink can is opened.

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