Quiz: Endothermic and Exothermic Rxns
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Last updated about 7 years ago
20 questions
Note from the author:
Properties (descriptions) of endothermic and exothermic reactions.
1
Chemical reactions don't need energy to break apart bonds.
Chemical reactions don't need energy to break apart bonds.
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In a chemical reactions new bonds form to make the products.
In a chemical reactions new bonds form to make the products.
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Energy cannot be created nor destroyed.
Energy cannot be created nor destroyed.
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More energy is released by products than is needed to break bonds.
More energy is released by products than is needed to break bonds.
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Products have less energy than the reactants.
Products have less energy than the reactants.
1
It literally means "taking in heat."
It literally means "taking in heat."
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Energy is needed to keep the reaction going.
Energy is needed to keep the reaction going.
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Reactions feel hot to us.
Reactions feel hot to us.
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An example is baking soda and vinegar.
An example is baking soda and vinegar.
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Reaction feels cold.
Reaction feels cold.
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Wood burning is an example.
Wood burning is an example.
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Products have more energy than the reactants.
Products have more energy than the reactants.
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Heat is absorbed.
Heat is absorbed.
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Photosynthesis is an example.
Photosynthesis is an example.
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Combustion reactions are examples.
Combustion reactions are examples.
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This equation: Reactants→Products+Energy
This equation: Reactants→Products+Energy
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Is the graph above respresentative of an endothermic or exothermic reaction?
Is the graph above respresentative of an endothermic or exothermic reaction?
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From where does the energy for photosynthesis come?
From where does the energy for photosynthesis come?
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During the photosynthesis reaction plants convert carbon dioxide and water to
During the photosynthesis reaction plants convert carbon dioxide and water to
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The energy needed to start reactions is called
The energy needed to start reactions is called