Matching
|
|
|
Match each item with the correct statement below. a. | distillation | d. | compound | b. | mass | e. | element | c. | chemical
reaction | f. | homogeneous
|
|
|
1.
|
amount of matter an object contains
|
|
2.
|
describes mixture with a uniform composition
|
|
3.
|
a process in which a liquid is boiled to produce a vapor that is condensed
again into a liquid
|
|
4.
|
substance that cannot be changed into simpler substances by chemical
means
|
|
5.
|
composed of two or more substances chemically combined in a fixed
proportion
|
|
6.
|
process in which substances are changed into different substances
|
Multiple Choice Identify the
choice that best completes the statement or answers the question.
|
|
7.
|
Which of the following is a heterogeneous mixture?
a. | vinegar in water | c. | oil and vinegar | b. | milk | d. | air |
|
|
8.
|
Which of the following is a homogeneous mixture?
a. | salt water | c. | sand and water | b. | beef stew | d. | soil |
|
|
9.
|
Separating a solid from a liquid by evaporating the liquid is called
____.
a. | filtration | c. | solution | b. | condensation | d. | distillation |
|
|
10.
|
An example of a homogeneous mixture is ____.
a. | water | c. | noodle soup | b. | stainless steel | d. | oxygen |
|
|
11.
|
Which of the following items is NOT a compound?
a. | baking soda | c. | sucrose | b. | salad dressing | d. | table salt |
|
|
12.
|
Which of the following is true about compounds?
a. | They can be physically separated into their component elements. | b. | They have
compositions that vary. | c. | They are substances. | d. | They have properties
similar to those of their component elements. |
|
|
13.
|
A substance that can be separated into two or more substances only by a chemical
change is a(n) ____.
a. | solution | c. | mixture | b. | element | d. | compound |
|
|
14.
|
Which of the following materials is a substance?
a. | air | c. | stainless steel | b. | gasoline | d. | silver |
|
|
15.
|
What is one difference between a mixture and a compound?
a. | A compound consists of more than one phase. | b. | A compound can only
be separated into its components by chemical means. | c. | A mixture can only be separated into its
components by chemical means. | d. | A mixture must be uniform in
composition. |
|
|
16.
|
What distinguishes a substance from a mixture?
a. | Substances are compounds, and mixtures are not. | b. | Mixtures are
groupings of elements, and compounds are not. | c. | Samples of the same substance can have
different intensive properties. | d. | Mixtures can be separated physically, while
compounds cannot. |
|
|
17.
|
The first figure in a properly written chemical symbol always is ____.
a. | boldfaced | c. | italicized | b. | capitalized | d. | underlined |
|
|
18.
|
Which of the following is used for chemical symbols today?
a. | drawings | c. | letters | b. | icons | d. | numbers |
|
|
19.
|
The chemical symbol for iron is ____.
|
|
20.
|
Which of the following represents a compound?
|
|
21.
|
The chemical formula of a compound does NOT indicate the ____.
a. | identity of the elements in the compound | b. | how elements are
joined in the compound | c. | the composition of the
compound | d. | relative proportions of the elements in the compound |
|
|
22.
|
What do chemical symbols and formulas represent, respectively?
a. | elements and compounds | b. | atoms and mixtures | c. | compounds and
mixtures | d. | elements and ions |
|
|
23.
|
Which substance has a chemical symbol that is derived from a Latin name?
a. | calcium | c. | oxygen | b. | hydrogen | d. | potassium |
|
|
24.
|
Which of the following is a chemical property?
a. | color | c. | freezing point | b. | hardness | d. | ability to react with
oxygen |
|
|
25.
|
In the chemical reaction in which sucrose is heated and decomposes to form
carbon dioxide and water, which of the following is a reactant?
a. | sucrose | c. | water | b. | carbon dioxide | d. | heat |
|