WGU C165 Behavior of Matter Quiz with
Complete Solutions
Correct 1/1 Points
1
Which of the following is a chemical change? *
A metal bridge turns brown as it rusts.
Water evaporates off a hot stovetop.
Rocks become smooth when they tumble in the surf.
Hot wax is poured into a candle mold.
Incorrect 0/1 Points
2
Salt dissolves in water to form saltwater. Is this considered a chemical
change or a physical change? *
This is a physical change.
This is a chemical change.
This is a chemical change and physical change
This is neither a chemical change and physical change
, Correct 1/1 Points
3
The fuel in a lighter is butane. When butane burns, the following change
takes place.
2C4H10 + 13O2 → 8CO2 + 10H2O
Is this a chemical change or a physical change? *
This is a physical change.
This is a chemical change.
This is a chemical change and physical change
This is neither a chemical change and physical change
Correct 1/1 Points
4
Two atoms of nitrogen bond together to form N2. What type of chemical
is N2? *
N2 is an element.
N2 is a compound.
N2 is a mixture.
N2 is a proton
Correct 1/1 Points
5
Cu+1 is an ion of copper with a charge of plus one. If Cu+1 loses an
electron, what will be formed? *
Complete Solutions
Correct 1/1 Points
1
Which of the following is a chemical change? *
A metal bridge turns brown as it rusts.
Water evaporates off a hot stovetop.
Rocks become smooth when they tumble in the surf.
Hot wax is poured into a candle mold.
Incorrect 0/1 Points
2
Salt dissolves in water to form saltwater. Is this considered a chemical
change or a physical change? *
This is a physical change.
This is a chemical change.
This is a chemical change and physical change
This is neither a chemical change and physical change
, Correct 1/1 Points
3
The fuel in a lighter is butane. When butane burns, the following change
takes place.
2C4H10 + 13O2 → 8CO2 + 10H2O
Is this a chemical change or a physical change? *
This is a physical change.
This is a chemical change.
This is a chemical change and physical change
This is neither a chemical change and physical change
Correct 1/1 Points
4
Two atoms of nitrogen bond together to form N2. What type of chemical
is N2? *
N2 is an element.
N2 is a compound.
N2 is a mixture.
N2 is a proton
Correct 1/1 Points
5
Cu+1 is an ion of copper with a charge of plus one. If Cu+1 loses an
electron, what will be formed? *
