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ThermoChem Intro

cava chem 303 4.01 Intro to Thermochemistry

QuestionAnswer
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.
When chemical bonds break, energy is [...]. When chemical bonds break, energy is absorbed.
Energy must be [...] to break bonds. Energy must be absorbed to break bonds.
When chemical bonds form, energy is [...]. When chemical bonds form, energy is released.
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.
Exothermic reactions [...] energy. Exothermic reactions release energy.
Endothermic reactions [...] energy. Endothermic reactions absorb energy.
Combustion reactions [...] energy. Combustion reactions release energy.
A solid must [...] energy to melt. A solid must absorb energy to melt.
Dissolving a [...] is usually an endothermic, but sometimes an exothermic reaction. Dissolving a salt is usually an endothermic, but sometimes an exothermic reaction.
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.
Created by: mr.shapard
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