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The melting point of the metal gallium is 30°C.

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1) QID: 1040
The melting point of the metal gallium is 30°C. Normal body temperature is about 37°C. When a person holds a piece of gallium, it tends to melt. This is an example of what type of change?

a change in composition
a physical change
a chemical change
a change in mass

(2) QID: 1042
Color, hardness, solubility, mass, density, volume, and melting point are all examples of what type of property of substances?

physical
chemical
intensive
extensive

(3) QID: 1043
The odor of a solution is an example of what type of measurement?

chemical
qualitative
quantitative
compositional

(4) QID: 1044
Table salt, or sodium chloride, melts at 801°C and boils at 1413°C. When table salt is melted and then boiled, what type of change(s) occur(s)?

chemical and physical changes
physical change only
chemical change only
neither chemical nor physical changes

(5) QID: 5751
True or false?
Since mass and volume are extensive properties, and density is the ratio of mass to volume, density is also an extensive property.

true
false

(6) QID: 8017
What is the general term for a factor that you can measure about matter that does not require a change of composition?

reactivity
flammability
physical property
chemical property

(7) QID: 8018
A physical property, such as mass or volume, that depends on the amount of matter, is called

an extensive property
a chemical property
an intensive property
water sensitivity

(8) QID: 8019
A qualitative measurement (as opposed to a quantitative measurement) is an analysis that yields descriptive, nonnumeric results. Which of the following is not a qualitative measurement?

color
taste
mass
odor

(9) QID: 8020
Which of the following is an extensive physical property?

temperature
mass
odor
melting point

(10) QID: 8021
Suppose that a man complains of feeling feverish. He says that he has an aching sensation in his joints and that he thinks he has a fever. He then uses a thermometer to find that he has a temperature of 101°F. The man’s descriptions of his condition are examples of what type(s) of measurement(s)?

quantitative measurement
qualitative measurement
quantitative and qualitative measurement
neither quantitative or qualitative measurements

 
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