Thermal Energy and Chemical Reactions Review

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What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in a substance.

Tags

NGSS.MS-PS1-4

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Tags

NGSS.HS-PS1-4

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Tags

NGSS.HS-PS1-4

Front

How does temperature affect the rate of a chemical reaction?

Back

Increasing temperature increases the kinetic energy of particles, leading to more frequent and effective collisions, thus speeding up the reaction.

Tags

NGSS.HS-PS1-5

Front

What are phase changes?

Back

Phase changes are transitions between solid, liquid, and gas states of matter, such as melting, freezing, condensation, and evaporation.

Tags

NGSS.MS-PS1-4

Front

What is the difference between freezing and melting?

Back

Freezing is the process of a liquid turning into a solid, while melting is the process of a solid turning into a liquid.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is condensation?

Back

Condensation is the process by which a gas turns into a liquid, often when it cools down.

Tags

NGSS.MS-PS1-4

Front

What is evaporation?

Back

Evaporation is the process by which a liquid turns into a gas, usually when it is heated.

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NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Front

What is the role of trials in scientific experiments?

Back

Trials are repeated tests that help ensure the accuracy and reliability of experimental results.

Tags

NGSS.MS-ETS1-4

Front

What is the significance of collisions in chemical reactions?

Back

Collisions between reactant particles are necessary for a chemical reaction to occur; more collisions increase the likelihood of a reaction.

Tags

NGSS.HS-PS1-5