Question

examine the model of the different states of matter. select all of the statements that accurately describe the particles in differing states. a gases contain less particles. b gases have the greatest kinetic energy. c energy is removed in the change from a liquid to a gas. d energy is added to change from a solid to a liquid state

Explanation:

• A: Incorrect, gases don't necessarily have fewer particles, just more spread - out.
• B: Correct, gas particles move faster and have higher kinetic energy.
• C: Incorrect, energy is added (endothermic) when changing from liquid to gas.
• D: Correct, melting (solid to liquid) requires energy input.

Answer:

B. Gases have the greatest kinetic energy, D. Energy is added to change from a solid to a liquid state