Question

determine which change of state is being described in this passage. as the temperature decreases, the atoms lose energy. the atoms begin to move slower. they are held together by attractive forces, but are still able to slide past each other. solid to liquid liquid to solid gas to liquid gas to solid

Explanation:

To determine the change of state, we analyze the properties:

• In a gas, atoms have high energy and move freely. When temperature decreases, gas atoms lose energy, move slower, and are held by attractive forces but can still slide past each other (a property of liquids). So this is gas to liquid.
• Solid to liquid involves gaining energy (melting), so A is wrong.
• Liquid to solid (freezing) has atoms vibrating in fixed positions, not sliding past each other, so B is wrong.
• Gas to solid (deposition) has atoms in fixed positions, so D is wrong.

Answer:

C. gas to liquid