Thermochemistry

What is work?

• A job

• The ability to do work or supply heat

• Something you don't want to do

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What is energy?

• Something you get from sleeping

• The ability to do work or supply heat

• A stadium in Houston

• A magical power

What is thermochemistry?

• study of heat changes that occur during a chemical reaction & physical changes of state

• the study of heat and chemistry

• the study of heat

• the study of chemistry

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When you add heat energy...

• Temperatures increase

• Molecules move slower

• Molecules move faster

• Temperatures decrease

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Which one is NOT a form energy?

• Kinetic

• Sound

• Nuclear

• Plant

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How does heat move?

• From cold to hot

• From hot to cold

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What is chemical potential energy?

• Energy from chemicals

• Energy to make chemicals

• Energy stored in chemical bonds

• Energy from the sky

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When a hot object and a cold object come together, heat will move from the warmer one to the colder one until they are the same temperature. What is this called?

• Equal

• Equilibrium

• Equality

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What is temperature?

• a measure of cold

• a measure of heat

• a measure of how something feels

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Match the following

• Warmer and cooler temperatures balance out to be the same temperature

• Exothermic

• Energy is exiting the system, something is getting colder

• Endothermic

• Energy is entering the system, something is getting warmer

• Equilibrium

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NGSS.HS-PS1-4