Question 1

Which of the following statements best describes an intensive property of matter?

Accepted Answer

It is independent of the amount of substance present.

Question 2

A student measures the boiling point of water three times and gets values of 99.8°C, 99.9°C, and 99.7°C. The actual boiling point is 100.0°C. Which statement is true about the student’s measurements?

Accepted Answer

The measurements are precise but not accurate.

Question 3

Which of the following is a chemical change?

Accepted Answer

Iron rusting when exposed to air and water.

Question 4

Which equation correctly converts Celsius temperature to Kelvin?

Accepted Answer

$K = \circ C + 273.15$

Question 5

A sample of liquid has a mass of 25.0 g and a volume of 10.0 mL. What is its density in g/mL?

Accepted Answer

$2.50\ \mathrm{g/mL}$

Question 6

Which of the following is NOT a physical property?

Accepted Answer

Flammability

Question 7

How many significant figures are in the measurement 0.00450?

Accepted Answer

3

Question 8

Which of the following best describes a compound?

Accepted Answer

A substance composed of two or more elements chemically bonded in fixed proportions.

Question 9

A student multiplies 2.35 (3 sig. figs) by 0.070 (2 sig. figs). What is the correct number of significant figures in the answer?

Accepted Answer

2

Question 10

Which of the following is the correct SI base unit for measuring the amount of substance?

Accepted Answer

Mole (mol)

Question 11

A mixture of sand and salt can be separated by which physical process?

Accepted Answer

Filtration

Question 12

Which prefix multiplier represents $10^{-6}$?

Accepted Answer

micro

Question 13

If you convert 100 m$^2$ to cm$^2$, what is the result?

Accepted Answer

$1,000,000\ \mathrm{cm}^2$

Question 14

Which of the following best describes kinetic energy?

Accepted Answer

Energy associated with the motion of an object.

Question 15

A student adds 2.345 and 0.07. What is the correct answer with the proper number of decimal places?

Accepted Answer

$2.41$

Question 16

Which of the following is an example of a physical change?

Accepted Answer

Evaporation of liquid propane from a gas grill.

Question 17

Which of the following is true about the Kelvin scale?

Accepted Answer

It assigns 0 K to the temperature at which molecular motion virtually stops.

Question 18

Which of the following is the correct conversion factor to convert inches squared to centimeters squared?

Accepted Answer

$(2.54\ \mathrm{cm}/1\ \mathrm{in})^2$

Question 19

Which of the following is an extensive property?

Accepted Answer

Mass

Question 20

A chemist needs to convert 0.5 gallons to cm$^3$. Given that 1 gallon = 3.79 dm$^3$ and 1 dm = 10 cm, what is the correct answer?

Accepted Answer

$1900\ \mathrm{cm}^3$

General Chemistry: Chapter 1 – Matter, Measurement, and Problem Solving

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