Chem 065 - Introductory General Chemistry » Winter 2024 » Chapter 3 Quiz

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Question #1
Gold is a(n)
A.   element.
B.   homogeneous mixture.
C.   none of these.
D.   compound.
E.   heterogeneous mixture.
Question #2
Which of the following is a physical property of both liquids and gases?
A.   has randomly arranged particles
B.   has a definite volume
C.   has strong interactions between its particles
D.   has its own shape
E.   has large spaces between molecules
Question #3
Which of the following would NOT be a physical change?
A.   melting gold to make jewelry
B.   tearing a piece of aluminum foil
C.   burning gasoline in a lawnmower
D.   boiling water for soup
E.   freezing water to make ice cubes
Question #4
A temperature of 41 °F is the same as
A.   16 °C.
B.   16 °C.
C.   5 °C.
D.   42 °C.
E.   310 °C.
Question #5
An energy diagram that shows the reactants having less energy than the products illustrates an:
A.   impossible reaction.
B.   exothermic reaction
C.   isothermic reaction
D.   endothermic reaction
Question #6
When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 38 grams of water and 10 grams of carbon dioxide from 10 grams of oxygen, how many grams of methane were needed for the reaction? No need to include unit in the answer. 
A.   41
B.   40
C.   39
D.   38
Question #7
How many calories are required to increase the temperature of 13 g of alcohol from 11 °C to 23 °C? The specific heat of alcohol is 0.588 cal/g °C.
A.   92 cal
B.   170 cal
C.   83 cal
D.   0.54 cal
E.   0.63 cal
Question #8
Raising the temperature of 10.0 g of water from 10.0 °C to 20.0 °C requires 100.0 cal of energy, while raising the temperature of 10.0 g of aluminum from 10.0 °C to 20.0 °C requires 22 cal. More calories are required to heat the water because
A.   10.0 °C is closer to the melting point of water than to the melting point of aluminum.
B.   water has a greater potential energy than aluminum.
C.   water is a liquid and aluminum is a solid at 10.0 °C.
D.   ten grams of water occupies a larger volume than 10.0 g of aluminum.
E.   water has a larger specific heat than aluminum.
Question #9
650. J is the same amount of energy as
A.   650 cal.
B.   155 cal.
C.   2720 cal.
D.   2.72 cal.
E.   1550 cal.

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