Question 1

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the components are visibly indistinguishable.

Question 2

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

Accepted Answer

Burning wood in a fireplace.

Question 3

A sample of matter has a definite volume but no definite shape. Which phase does it belong to?

Accepted Answer

Liquid

Question 4

Which statement best describes the Law of Conservation of Energy?

Accepted Answer

Energy cannot be created or destroyed, only transferred or converted.

Question 5

Which of the following is a pure substance that can be broken down by chemical means?

Accepted Answer

Compound

Question 6

Which of the following best describes kinetic energy?

Accepted Answer

Energy of motion.

Question 7

A scientist observes that a substance changes from a solid to a gas without passing through the liquid phase. What is this process called, and what type of change is it?

Accepted Answer

Sublimation; physical change

Question 8

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with acid

Question 9

Which of the following best describes potential energy?

Accepted Answer

Energy due to position or chemical composition

Question 10

A student mixes sand and iron filings together. Which type of matter have they created?

Accepted Answer

Heterogeneous mixture

Question 11

Which of the following is an example of a plasma?

Accepted Answer

Lightning during a thunderstorm

Question 12

Which of the following best describes a chemical property?

Accepted Answer

The ability of iron to rust

Question 13

Which equation correctly represents the relationship for kinetic energy?

Accepted Answer

$$KE = \frac{1}{2}mv^2$

Question 14

A sealed container holds a gas. If the gas is compressed to half its original volume at constant temperature, what happens to the spacing of the particles?

Accepted Answer

The particles become closer together.

Question 15

Which of the following is an example of energy being converted from one form to another, as described by the Law of Conservation of Energy?

Accepted Answer

A battery powering a flashlight, producing light and heat

Question 16

Which of the following statements about mixtures is correct?

Accepted Answer

Mixtures have variable composition throughout.

Question 17

Which of the following is a correct statement about elements?

Accepted Answer

Elements cannot be broken down by chemical means.

Question 18

A chemical reaction in a car engine converts gasoline and oxygen into carbon dioxide, water, and energy. Which of the following best describes this process?

Accepted Answer

A chemical change because new substances are formed.

Question 19

Which of the following is an example of work, as defined in chemistry?

Accepted Answer

A force moving an object over a distance.

Question 20

Which of the following best describes thermal energy?

Accepted Answer

Energy associated with the temperature of an object.

chapter 1

Study Guide - Practice Questions

Study Guide - Flashcards