7/20/14
1) The petroleum is sometimes
considered “buried sunshine” because it stores energy.
2) a. Potential energy is
energy of position and it is stored within a coiled spring.
b.
Kinetic energy is energy related to motion and an example would be the movement
of a car.
3) In a chemical reaction energy is released,
bonds break, and reactant atoms reorganize to form new bonds.
4) A molecule of butane because it contains
more electrons so it creates more energy.
5) a. Kinetic energy
b.
Potential energy
c. Kinetic
energy
d.
Potential energy
e.
Kinetic energy
6) The law of conservation of energy states
that energy is neither created nor destroyed in any mechanical, physical, or
chemical processes.
7) Chemical bonds stores energy so it requires
energy to break it.
8) a. Exothermic because the wood is releasing
energy as it burns.
b. Endothermic
because it requires additional energy to crack the large hydrocarbon molecule.
c. Endothermic
because it requires additional energy to digest the candy bar.
9) When burning a candle, the
reactants release energy from the product.
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