Question 1

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

Accepted Answer

Oxygen gas

Question 2

Which statement best describes a chemical property?

Accepted Answer

Iron reacts with oxygen to form rust.

Question 3

Which of the following changes is a physical change?

Accepted Answer

Dissolving sugar in water

Question 4

Express the number 0.000 000 000 000 000 000 000 327 g in scientific notation.

Accepted Answer

$3.27 	imes 10^{-22}$ g

Question 5

How many significant digits are in the measurement 0.1400 kg?

Accepted Answer

4

Question 6

When adding 4.87 mL and 46.0 mL, what is the correct answer rounded to the proper number of significant digits?

Accepted Answer

$50.9$ mL

Question 7

Which of the following is an exact number?

Accepted Answer

2.54 cm in an inch

Question 8

A sample of silver has a mass of 100.0 g and a density of 10.40 g/cm$^3$. What is its volume in cm$^3$?

Accepted Answer

$9.62$ cm$^3$

Question 9

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

Accepted Answer

micro

Question 10

Convert 26.22 miles to centimeters. (1 mile = 1.609 km, 1 km = 1000 m, 1 m = 100 cm)

Accepted Answer

$4.22 	imes 10^6$ cm

Question 11

A student measures the temperature of a solution as 41°C. What is this temperature in Kelvin?

Accepted Answer

$314$ K

Question 12

Which of the following statements about density is correct?

Accepted Answer

Density is a physical property and depends on temperature.

Question 13

A 20.0 g sample of gold is heated from 25°C to 55°C. If the specific heat of gold is 0.031 cal/g°C, how many calories of heat are required?

Accepted Answer

$18.6$ cal

Question 14

Which of the following is NOT a physical property?

Accepted Answer

Ability to react with acid

Question 15

When multiplying 3.4 by 0.023 g, how many significant digits should the answer have?

Accepted Answer

2

Question 16

Which of the following conversions is correct for temperature?

Accepted Answer

$K = ^\circ C + 273$

Question 17

A graduated cylinder contains 25.0 mL of water. If 0.01 mL is added, what is the total volume reported to the correct number of decimal places?

Accepted Answer

$25.0$ mL

Question 18

Which of the following is a mixture?

Accepted Answer

Steel

Question 19

Which of the following best describes the difference between 'volume contained within' and 'volume delivered'?

Accepted Answer

Volume contained within is the amount of liquid a container can hold, while volume delivered is the amount transferred to another container.

Chapter 1: Matter and Measurements – Study Notes

Study Guide - Practice Questions