Which statement describes a gas?

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Study for the Georgia High School Physical Science Test. Prepare with flashcards and multiple-choice questions, detailed hints and explanations included. Get ready for your exam!

Multiple Choice

Which statement describes a gas?

Explanation:
Gases have no fixed shape or volume because their particles are far apart and move rapidly, filling the space available. The high kinetic energy of these particles causes them to spread out, collide, and push against the container, making gases compressible and able to fill any shape. That combination—no definite shape or volume and high energy—best describes a gas. The other descriptions fit solids (definite shape and volume) and liquids (definite volume but shape follows the container and they flow) and plasma (an ionized state of matter).

Gases have no fixed shape or volume because their particles are far apart and move rapidly, filling the space available. The high kinetic energy of these particles causes them to spread out, collide, and push against the container, making gases compressible and able to fill any shape. That combination—no definite shape or volume and high energy—best describes a gas. The other descriptions fit solids (definite shape and volume) and liquids (definite volume but shape follows the container and they flow) and plasma (an ionized state of matter).

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