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Topic 2.2
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1
Which of the following is an example of a physical property?
A)combustibility
B)formation of a precipitate
C)density
D)chemical decomposition
2
Chemical properties can be observed when…
A)water is added to the reaction.
B)substances interact.
C)electric current passes along a wire.
D)light shines on a chrome surface.
3
Density of a substance is calculated by…
A)dividing its volume by its mass.
B)dividing its mass by its volume.
C)multiplying its mass by its volume.
D)multiplying its volume by its mass.
4
Chemical properties describe how substances…
A)change to produce new substances.
B)do not change when combined with one another.
C)always join together to form new products.
D)always produce more products than reactants.
5
Combustibility occurs when a substance…
A)is reduced to its parts.
B)forms a precipitate.
C)browns due to exposure to oxygen.
D)burns in air.
6
A precipitate forms when…
A)a substance dissolves in another substance.
B)substances are mixed together and a gas is released.
C)substances are mixed together and a liquid forms.
D)substances are mixed together and a solid forms.
7
Water being broken down into its parts is an example of…
A)solubility.
B)combustibility.
C)decomposition.
D)conductivity.





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