cava chem 303 4.01 Intro to Thermochemistry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Swedish chemist Alfred Nobel invented [...] in 1866 and became very rich. He left provisions in his Will to use his fortune to establish the Nobel Prizes after his death. | Swedish chemist Alfred Nobel invented dynamite in 1866 and became very rich. He left provisions in his Will to use his fortune to establish the Nobel Prizes after his death.
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| When chemical bonds break, energy is [...]. | When chemical bonds break, energy is absorbed.
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| Energy must be [...] to break bonds. | Energy must be absorbed to break bonds.
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| When chemical bonds form, energy is [...]. | When chemical bonds form, energy is released.
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| In a chemical reaction, some bonds may be broken while others are [...]. | In a chemical reaction, some bonds may be broken while others are formed.
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| Exothermic reactions [...] energy. | Exothermic reactions release energy.
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| Endothermic reactions [...] energy. | Endothermic reactions absorb energy.
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| Combustion reactions [...] energy. | Combustion reactions release energy.
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| A solid must [...] energy to melt. | A solid must absorb energy to melt.
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| Dissolving a [...] is usually an endothermic, but sometimes an exothermic reaction. | Dissolving a salt is usually an endothermic, but sometimes an exothermic reaction.
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| For any chemical reaction, the [...] energy before and after the reaction remains the same. | For any chemical reaction, the total energy before and after the reaction remains the same.
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Created by:
mr.shapard
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