Chapter 1 Testbank

What is the specific gravity of an object that weighs 13.35 g and has a volume of 25.00 mL? The density of water under the same conditions is 0.980 g/mL.

0.545

Provide the answer to the following problem using scientific notation and the proper number of significant digits: (6.00 × 10-2)(3.00 × 10-4) = ?

1.80 × 10−5

The area of a rectangle is determined by the formula: area = length × width. If a rectangle has a length of 32.6 cm and a width of 72.6 cm, what is the area of the rectangle to the correct number of significant figures?

2,370 cm2

If the density of carbon tetrachloride is 1.59 g/mL, what is the volume in L, of 4.21 kg of carbon tetrachloride?

2.65 L

Give the answer to the following calculation to the correct number of significant figures.5.0 × 10-4 - 6 × 10-5

4.4 × 10-4

Consider the following sets of numbers. If the true value is 12.6 cm2, which of the following best describes the set of numbers. 12.6 cm2, 12.5 cm2, 12.6 cm2

Accurate and precise.

Which statement is false? Mass is an example of an extensive property. Volume is an example of an extensive property. Temperature is an example of an intensive property. An intensive property is one that does not depend upon the amount of the substance. An extensive property is synonymous with a physical property

An extensive property is synonymous with a physical property

Which of the following is false concerning the gas state? Gases have no definite shape. Gases have no definite volume. Particles are far apart from each other. Particles are usually in a regular or organized pattern. When gas molecules collide, they do not lose energy.

Particles are usually in a regular or organized pattern.

In the scientific method, a law carries more weight than a hypothesis.

True

Energy may be defined as the heat content of an object.

false

Mass is the force resulting from the pull of gravity upon an object.

false

The terms mass and weight are identical.

false

Which of the following is a chemical property?

flammability

In which state of matter are forces between particles least dominant?

gas

NaCl is best classified as a/an ___________.

pure substance and compound

Each piece of data is the individual result of a single measurement.

true

Equal masses of glass and steel at the same temperature will have different heat energies.

true

The presence of some error is a natural consequence of any measurement.

true