Question

why would a pill dissolve so much faster in hot water than it does in cold water?

the hot water is made out of particles that are moving slower and are farther apart.

the hot water is made out of particles that are moving faster and are closer together

the hot water is made out of particles that are moving faster and are farther apart

the hot water is made out of particles that are moving slower and are closer together

Explanation:

To determine why a pill dissolves faster in hot water, we use the kinetic theory of matter. Temperature is related to particle motion: higher temperature (hot water) means particles move faster. Also, in hot water (liquid), as temperature increases, particles have more energy, move more, and are slightly farther apart (compared to cold water, where particles move slower and are closer). Faster - moving, farther - apart particles in hot water collide more with the pill's particles, speeding up dissolution.

• Analyzing Option 1: Claims hot water particles move slower (incorrect, hot water has higher temp, faster motion) and are farther apart (motion part wrong), so eliminate.
• Analyzing Option 2: Says particles are closer together (hot water particles are not closer than cold water; in liquids, heating makes them a bit farther apart), so eliminate.
• Analyzing Option 3: States particles move faster (correct, due to higher temp) and are farther apart (correct, as heat increases particle separation in liquid), this matches the kinetic theory and dissolution principles.
• Analyzing Option 4: Claims particles move slower (wrong) and are closer together (wrong), so eliminate.

Answer:

C. The hot water is made out of particles that are moving faster and are farther apart