Chemical and Physical Changes

Front

Identify the property of the substance that is changing: Composition, Boiling Point, Melting Point, Volume

Back

Melting Point

Front

A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?

Back

The salt and water have both undergone a physical change

Front

A change in ________, such as a liquid changing to a gas, is an example of a physical change.

Back

State

Front

Jeremy puts an unopened soft drink in the freezer, and the can bursts. What has changed? Options: Volume, Molecular Formula, Color, Matter

Back

Volume

Front

The chemicals that are created in a chemical reaction are called

Back

Products

Front

How many Oxygen atoms are in 2NO₃?

Back

6

Front

Which statement describes a physical change? Options: Calcium is added to acid and hydrogen gas is produced, Sodium metal reacts explosively with oxygen, Iron oxidizes and rusts, Lead is heated and becomes more viscous (thick)

Back

Lead is heated and becomes more viscous (thick)

Front

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

• A mixture of flour, sugar, eggs and butter is baked to make a cake
• Flour and sugar are sifted together into a measuring cup
• The shell of an egg breaks when struck against a hard surface
• Chocolate squares are melted to make cake icing

Back

A mixture of flour, sugar, eggs and butter is baked to make a cake

Front

A _______ occurs and results in the formation of a color change, temperature change and gas.

Back

Chemical Change

Front

Simple sugar has a molecular formula of C₁₂H₂₂O₁₁, CHO, C₆H₁₂O₆, CO₂

Back

C₆H₁₂O₆