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Question: 1 / 2700

Which of the following statements about gases is true?

Gases have fixed shapes

Gas molecules are tightly packed

Gases expand to fill their containers

Gases are characterized by their ability to expand to fill the entire volume of their containers. This property arises because gas molecules are in constant, rapid motion and have relatively high kinetic energy. Unlike solids and liquids, where particles are closely packed and fixed in place, gas molecules are much farther apart and move freely. When gas is placed in a container, it spreads out to occupy the available space uniformly.

The other statements do not accurately describe the nature of gases. Gases do not have fixed shapes; they take on the shape of their containers instead. Additionally, gas molecules are not tightly packed; they are spaced apart, allowing for compression. Lastly, gases can indeed be compressed, as the space between gas molecules can decrease when pressure is applied.

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Gases cannot be compressed

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