#1
Which of the following is a chemical symbol for copper?
Cu
ExplanationCu is the chemical symbol for copper.
#2
What is the color of copper when it is oxidized?
Green
ExplanationCopper turns green when oxidized.
#3
What is the chemical formula of copper sulfate?
CuSO4
ExplanationThe chemical formula of copper sulfate is CuSO4.
#4
Which of the following gases does copper not react with at room temperature?
Hydrogen
ExplanationCopper does not react with hydrogen gas at room temperature.
#5
What is the process of coating a thin layer of copper onto another metal called?
Electroplating
ExplanationThe process of coating a thin layer of copper onto another metal is called electroplating.
#6
Which of the following is the balanced equation for the reaction between copper and oxygen?
Cu + O2 -> CuO
ExplanationCopper reacts with oxygen to form copper oxide (CuO).
#7
What is the name of the process where copper is obtained from its ore by heating in the presence of carbon?
Reduction
ExplanationCopper is obtained from its ore through reduction by heating with carbon.
#8
What is the product of the reaction between copper oxide and sulfuric acid?
Copper sulfate
ExplanationCopper sulfate is formed by the reaction of copper oxide with sulfuric acid.
#9
What is the common name of the reaction where copper metal displaces silver from silver nitrate solution?
Single replacement reaction
ExplanationThe reaction where copper displaces silver from silver nitrate solution is called a single replacement reaction.
#10
Which of the following is NOT a common oxidation state of copper?
+4
Explanation+4 is not a common oxidation state of copper.
#11
Which of the following acids can dissolve copper?
Nitric acid
ExplanationCopper dissolves in nitric acid.
#12
What is the chemical formula of basic copper carbonate, a greenish-blue mineral?
CuCO3·Cu(OH)2
ExplanationThe chemical formula of basic copper carbonate is CuCO3·Cu(OH)2.
#13
Which of the following is a use of copper sulfate?
Fertilizer
ExplanationCopper sulfate is commonly used as a fertilizer.
#14
What is the chemical formula of 'bordeaux mixture', a fungicide containing copper?
CuSO4·Ca(OH)2
ExplanationThe chemical formula of bordeaux mixture is CuSO4·Ca(OH)2.
#15
What is the chemical formula of 'verdigris', a blue-green pigment formed by the reaction of copper with acetic acid?
Cu(CH3COO)2·H2O
ExplanationThe chemical formula of verdigris is Cu(CH3COO)2·H2O.