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9 Cards in this Set
- Front
- Back
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true or false
all chemical reactions need a certain amount of activation energy to get things started |
true
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what is activation energy?
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activation energy is the minimal amount of energy needed to start a chemical reaction
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what is exothermic chemical reaction?
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exothermic chemical reaction occurs when the chemical reaction releases energy. products become warmer than the reactants.
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true or false
products become warmer than the reactants in exothermic chemical reaction? |
true
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true or false
exothermic chemical reaction occurs when the chemical reaction doesn't release energy |
false. it occurs when the chemical reaction releases energy
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what is endothermic chemical reaction?
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endothermic chemical reaction is a chemical reaction where energy is absorbed. Usually the products temperature are colder than the reactants.
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true or false
endothermic chemical reaction is when the products temperature are colder than the reactants |
true
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true or false
endothermic chemical reaction is a chemical reaction where energy is not absorbed |
false. it is a chemical reaction where energy is absorbed.
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which of the following is not a factor that can cause the rate of a chemical reaction to increase?
a) increase in surface area b) decrease in temperature c) use of a catalyst d) increase in concentration of reactants |
b. the temperature must increase
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