Multiple Choice
Which of the following is the most appropriate level of accuracy for a thermometer used to measure the temperature of air in a general chemistry laboratory?
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1. Intro to General Chemistry
Temperature
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When the temperature of a substance is increased, what happens to the motion of its particles?
A
The particles move slower and have less kinetic energy.
B
The particles stop moving completely.
C
The particles lose energy and become more tightly packed.
D
The particles move faster and have more kinetic energy.
Verified step by step guidance1
Understand that temperature is a measure of the average kinetic energy of the particles in a substance.
Recall that when temperature increases, the particles gain energy, which affects their motion.
Recognize that increased kinetic energy means particles move faster, not slower or stop moving.
Know that faster-moving particles tend to spread out more, so they do not become more tightly packed due to increased temperature.
Conclude that increasing temperature causes particles to move faster and have more kinetic energy.
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