Group 2

Group 02 Group Name : Group 2
Group Members :
Tan Hui Sin, Ria Chen Lishan, Ang Yu Ting, Xie Wenhan, Ameer S/o Anaithali, Chen Xi Yan
1.

a. Exothermic: combustion gives off heat
b. Endothermic:removes latent heat of evaporation from our skin and cools surface temperature (energy is used to change water from liquid to gaseous state)
c. Endothermic:Energy is absorbed to break Intermolecular forces of attraction.
2.

Energy for bond forming is much greater than energy for bond breaking.
Bond energy of products are much higher than the bond energy of reactants.
3.

Temperature is like a measurement. Heat is the total energy of molecular motion.
For example the temperature of a small cup of water may be the same as the temperature of a large tub of water, but the tub of water has more heat because it has more water, thus it has more thermal energy.
4.

a. There are low knocking characteristics – 98% isooctane, 2% heptane
b. It doesn’t tell us that it contains oxygenates.
5.
[226]
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[230]
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[232]
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[234]
10.
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