Kinetic Molecular Theory Quiz

What is temperature a measure of?

• The average speed of molecules in a substance.

• The average kinetic energy of molecules in a substance.

• The total potential energy of molecules in a substance.

• The total thermal energy in a substance.

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What does the Kinetic Molecular Theory explain?

• The forces between molecules and their energy

• The color of molecules

• The size of molecules

• The number of molecules in a substance

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How does the kinetic energy of molecules in a gas compare to that in solids and liquids?

• It is less than in solids but more than in liquids.

• It is the same as in solids and liquids.

• It is greater than in solids and liquids.

• It is only greater than in solids but less than in liquids.

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NGSS.MS-PS3-1

According to the Kinetic Molecular Theory, what is true about molecules?

• They are in constant motion

• They are static

• They only move when energy is applied

• They move faster in solids than in gases

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As the kinetic energy of molecules decreases, what happens to the temperature?

• The temperature increases.

• The temperature does not change.

• The temperature fluctuates unpredictably.

• The temperature decreases.

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Which has lower kinetic energy?

• Water at 100°C or 212°F.

• Water at 0°C or 32°F.

• Water at absolute zero.

• Water at room temperature.

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According to the Kinetic Molecular Theory, how do molecules in a solid behave?

• Molecules are very far apart and in random motion.

• Molecules flow or glide over each other.

• Molecules are in continual motion and are much farther apart than in liquids.

• Molecules are very close to each other due to attraction of charge and have an ordered arrangement.

What happens to the movement of molecules when pressure is increased?

• The movement of molecules will decrease.

• The movement of molecules will stay the same.

• The movement of molecules will increase.

• The molecules will stop moving.

What is a unique characteristic of molecules in a liquid state?

• They have enough kinetic energy to move out of an ordered arrangement.

• They are in continual motion and are much farther apart than in solids.

• They are very close to each other due to attraction of charge.

• They are very far apart and in random motion like in plasma.

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What is the modern model of an atom compared to?

• A solid sphere

• A cloud of electrons surrounding a nucleus

• A box filled with particles

• A miniature solar system