Assignment #13: Unit 3, Vocabulary Quiz

Name (First and Last)

Class Period

• Period 1
• Period 2
• Period 3
• Period 4
• Period 5

1. What is an acid?

• A) A substance that increases the pH of a solution
• B) A substance that donates protons (H⁺ ions) in a solution
• C) A type of gas
• D) A solid that does not dissolve in water

2. What does it mean to analyze?

• A) To combine two substances
• B) To examine in detail for purposes of explanation
• C) To create a hypothesis
• D) To measure the volume of a liquid

3. What is an atom?

• A) The smallest unit of a compound
• B) A particle that can be split into protons and neutrons
• C) The basic unit of a chemical element
• D) A type of molecule

4.What is a base?

• A) A substance that donates protons
• B) A substance that accepts protons or donates hydroxide ions (OH⁻)
• C) A type of solid
• D) A liquid that cannot dissolve

5. What does it mean to boil?

• A) To freeze a liquid
• B) To heat a liquid until it turns into gas
• C) To mix two substances
• D) To dissolve a solid in a liquid

6. What is a chemical change?

• A) A change that affects only the physical properties of a substance
• B) A change that results in the formation of new chemical substances
• C) A change in temperature
• D) A change in state of matter

7. What is a chemical property?

• A) A characteristic that can be observed without changing the substance
• B) A property that describes how a substance reacts with other substances
• C) A property related to the mass of a substance
• D) A property that describes the state of matter

8. What does it mean to classify?

• A) To measure the volume of a substance
• B) To arrange or organize based on shared characteristics
• C) To analyze data
• D) To create a hypothesis