Question 1

Which of the following best describes a chemical property?

Accepted Answer

The flammability of gasoline

Question 2

A student measures the mass of a sample as 4.70 g. How many significant figures are in this measurement?

Accepted Answer

3

Question 3

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

Oil and vinegar salad dressing

Question 4

A sample of aluminum has a mass of 54.0 g and a volume of 20.0 cm$^3$. What is its density in g/cm$^3$?

Accepted Answer

$2.70$

Question 5

Which of the following statements about the scientific method is FALSE?

Accepted Answer

A hypothesis is a summary of a large quantity of information.

Question 6

Convert $0.0047$ kilograms to milligrams. (Use $1\ \mathrm{kg} = 10^3\ \mathrm{g}$ and $1\ \mathrm{g} = 10^3\ \mathrm{mg}$)

Accepted Answer

$4.7 	imes 10^6$ mg

Question 7

Which of the following is an extensive property?

Accepted Answer

Mass

Question 8

A beaker contains $10.0$ mL of mercury ($\mathrm{Hg}$) with a density of $13.6$ g/mL. What is the mass of mercury in the beaker?

Accepted Answer

$136$ g

Question 9

Which of the following best describes a physical change?

Accepted Answer

Boiling water becomes steam

Question 10

A student adds $1.26$ and $3.831$ using the correct number of significant figures. What is the result?

Accepted Answer

$5.09$

Question 11

Which of the following is the correct scientific notation for $0.00018$ with two significant figures?

Accepted Answer

$1.8 	imes 10^{-4}$

Question 12

A sample of air has a density of $0.0013$ g/mL. What is the mass, in grams, of a $6.0$ L sample of air? (Note: $1$ L $= 1000$ mL)

Accepted Answer

$7.8$ g

Question 13

Which of the following is a correct statement about energy?

Accepted Answer

Energy can be converted from one form to another.

Question 14

A patient’s urine sample has a density of $1.020$ g/mL. What is the specific gravity of the sample? (Density of water at $4^\circ$C is $1.000$ g/mL)

Accepted Answer

$1.02$

Question 15

Which of the following is an example of a pure substance?

Accepted Answer

Oxygen gas

Question 16

Convert $75$ degrees Celsius to degrees Fahrenheit using the formula $T_F = 1.8 	imes T_C + 32$.

Accepted Answer

$167$ ^\circ$F

Question 17

Which of the following is the best example of a model in chemistry?

Accepted Answer

A ball-and-stick representation of methane

Question 18

A student needs to convert $5.5$ inches to millimeters. (Given: $1$ inch $= 2.54$ cm, $1$ cm $= 10$ mm). What is the correct answer?

Accepted Answer

$139.7$ mm

Question 19

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignoring data that does not fit the hypothesis

Chapter 1: Chemistry—Methods and Measurement (Study Notes)

Study Guide - Practice Questions