Q: Which of the following is the correct conversion factor to convert from kilometers to meters?

$$1 \ \text{km} = 1000 \ \text{m}$$

Q: A student needs to convert $$250 mL to $$liters. Which calculation is correct?

$$250 \ \text{mL} \times \frac{1 \ \text{L}}{1000 \ \text{mL}} = 0.25 \ \text{L}$$

Q: Which of the following is the correct formula for density?

$$\text{Density} = \frac{\text{mass}}{\text{volume}}$$

Q: A student needs to convert $$25.0^\circ \text{C} to $$Fahrenheit. Which calculation is correct?

$$F = (25.0 \times \frac{9}{5}) + 32 = 77.0^\circ \text{F}$$

Question 1

Which of the following measurements contains the correct number of significant figures?

A student records the mass of a sample as 0.04050 g.

Accepted Answer

0.04050 g (4 significant figures)

Question 2

A chemist adds $$2.345 g $$and $$0.07 g. $$What is the correct answer, using the rules for significant figures in addition?

Accepted Answer

$$2.42 g$$

Question 3

Which of the following is the correct conversion factor to convert from kilometers to meters?

Accepted Answer

$$1 \ 	ext{km} = 1000 \ 	ext{m}$$

Question 4

A patient’s temperature is measured as $$39.0^\circ 	ext{C}. $$What is this temperature in Kelvin?

Accepted Answer

$$312.0 \ 	ext{K}$$

Question 5

Which of the following is an example of an extensive property?

Accepted Answer

Mass

Question 6

A student needs to convert $$250 mL to $$liters. Which calculation is correct?

Accepted Answer

$$250 \ 	ext{mL} 	imes \frac{1 \ 	ext{L}}{1000 \ 	ext{mL}} = 0.25 \ 	ext{L}$$

Question 7

Which of the following best describes a chemical change?

Accepted Answer

Burning of gasoline

Question 8

A reaction releases $$150 kJ of $$energy. Which term best describes this process?

Accepted Answer

Exothermic

Question 9

Which of the following is a derived SI unit?

Accepted Answer

Joule

Question 10

A sample of ethanol has a density of $$0.789 \ 	ext{g/mL}. $$What is the mass of $$50.0 \ 	ext{mL} of $$ethanol?

Accepted Answer

$$39.45 \ 	ext{g}$$

Question 11

Which of the following is NOT a fundamental SI unit?

Accepted Answer

Liter

Question 12

Which of the following statements about physical and chemical properties is correct?

Accepted Answer

Chemical properties describe the ability of a substance to undergo a specific chemical change.

Question 13

A student calculates the energy change for a reaction using the equation $$q = m c \Delta T. $$What does each variable represent?

Accepted Answer

$$q is $$heat, $$m is $$mass, $$c is $$specific heat, $$\Delta T is $$change in temperature

Question 14

Which of the following is the correct formula for density?

Accepted Answer

$$	ext{Density} = \frac{	ext{mass}}{	ext{volume}}$$

Question 15

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 16

A student needs to convert $$25.0^\circ 	ext{C} to $$Fahrenheit. Which calculation is correct?

Accepted Answer

$$F = (25.0 	imes \frac{9}{5}) + 32 = 77.0^\circ 	ext{F}$$

Question 17

Which of the following best describes the law of conservation of mass?

Accepted Answer

Mass is neither created nor destroyed in a chemical reaction.

Question 18

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

Accepted Answer

Evaporation of water

Question 19

A student measures the length of a metal rod as $$12.30 cm $$and the width as $$2.0 cm. $$What is the area, reported with the correct number of significant figures?

Accepted Answer

$$24.6 \ 	ext{cm}^2$$

Question 20

Which of the following is the best definition of energy in chemistry?

Accepted Answer

The ability to do work or produce heat

Chapter 1: Matter, Energy, and Measurement – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards