Endothermic and Exothermic Reactions Amplify

One of the products of combustion is heat. This means it is an example of an ____________ reaction.

• endothermic

• exothermic

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NGSS.HS-PS3-4

As ice melts, energy is absorbed to break bonds and form water. Is this an example of an endothermic or exothermic reaction? Why?

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Fireworks are made from a formula of chemicals that release energy (and heat) when they explode. Is this an example of an endothermic or exothermic reaction? Why?

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NGSS.HS-PS1-4

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The graph above is from which type of reaction?

• Endothermic reaction

• Exothermic Reaction

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The graph above is from which type of reaction?

• Endothermic reaction

• Exothermic reaction

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NGSS.HS-PS1-4

In an endothermic reaction, energy is _________.

• absorbed

• released

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NGSS.HS-PS1-4

_____ reactions usually feel hot!

• endothermic

• exothermic

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NGSS.HS-PS1-4

Which of the following is a characteristic of an endothermic reaction?

• Energy is absorbed from the surroundings

• Energy is released to the surroundings

• Temperature of the surroundings increases

• Light is emitted

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NGSS.HS-PS1-4

In an exothermic reaction, the energy of the products is _______ compared to the reactants.

• higher

• lower

• the same

• unpredictable

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NGSS.HS-PS1-4

Which of the following reactions is an example of an exothermic process?

• Photosynthesis

• Combustion of gasoline

• Melting of ice

• Evaporation of water

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NGSS.HS-PS1-4

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