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Section 5.3
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1
What is the function of a catalyst?
A)A catalyst is a substance that decreases the rate of a reaction.
B)A catalyst is used to stop a chemical reaction from occurring.
C)A catalyst is a substance that increases the rate of a chemical reaction.
D)A catalyst makes a reaction happen at a faster rate and is completely used up in the reaction.
2
In the gold mining industry, the soluble compound is drained away from the gold ore to allow the gold metal to be accessed. What is the name of the technique used?
A)metal extracting
B)aqueous dissolving
C)aqueous extracting
D)leaching
3
What element is used to extract gold from solution after it is collected from gold ore?
A)cyanide
B)silver
C)zinc
D)platinum
4
What is true about a catalytic converter?
A)A catalytic converter reduces the emissions of gases from a car’s exhaust by breaking down the gas into the elements nitrogen and oxygen.
B)A catalytic converter decomposes gas emissions back into the elements hydrogen and nitrogen.
C)A catalytic converter uses non-metals as catalysts to break down gas.
D)A catalytic converter helps to change unburned gasoline into carbon dioxide and hydrogen.
5
What does HHPS stand for?
A)Harmful Household Product Symbols
B)Hazardous Household Product Symbols
C)Hazardous Harmful Prevention System
D)Harmful Household Precaution System
6
What does a label showing a skeletal hand in a beaker represent?
A)It means the product is explosive.
B)It means the product is flammable.
C)It means the product is poisonous if consumed or inhaled.
D)It means the product is corrosive and will burn the skin, eyes, and other areas of the body.





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