Changes of Matter review

A student took ice cream outside on a summer day. The heat would cause what kind of change?

• a solid becoming a liquid
• a liquid becoming a gas
• a liquid becoming a solid 
• a gas becoming a liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Changes in  matter does NOT include...

• melting
• freezing
• vaporization
• creating a mixture 

Tags

NGSS.MS-PS1-4

When you melt a solid, do you add heat or take heat away?

• Add heat
• Take heat away

Tags

NGSS.MS-PS1-4

What process happens when gas is changed into a liquid?

• Evaporation
• Melting
• Freezing
• Condensation

Tags

NGSS.MS-PS1-4

The diagram shows the process of

• melting
• boiling
• freezing
• condensing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Why is the formation of rust considered a chemical change?

• Rust is more reactive than oxygen

• Rust has the same chemical composition as iron.

• Rust has a lower density than iron.

• Rust has properties that are different from iron and oxygen.

Tags

NGSS.MS-PS1-2

Amanda investigated physical and chemical changes in science class and then classified her changes into two columns shown.

Which of the following statement best describes the information in the table?

• Column B represents physical changes because they cannot be reversed.

• Column A represents chemical changes because new substances are formed.

• Column A represents physical changes because the original substances have not changed.

• Column B represents chemical changes because the shape of the substances has changed.

Tags

NGSS.MS-PS1-2

Which process is an example of a physical change?

• A peanut butter sandwich is eaten and broken down by enzymes in the stomach.

• Sodium metal and water are combined to form a basic compound and a flammable gas.

• Carrots are cut into small pieces and mixed into a salad.

• Sodium metal and chlorine gas are combined to form sodium chloride, or table salt

Lena is making a cake to share with her family. She combines the ingredients for the cake, then pours the batter into two pans and bakes the cake for 45 minutes in the oven. What type of change is baking a cake?

• Baking a cake is a physical change, because it can be reversed.

• Baking a cake is a chemical change, because you combine chemicals.

• Baking a cake is a chemical change, because it becomes a different substance.

• Baking a cake is a physical change, because the ingredients are the same they are just combined together.

Tags

NGSS.MS-PS1-2

Ethan is observing and measuring the properties of a substance. He heats the substance and observes that the substance turns from a brown solid to a black powder. He then measures the properties of the black powder and compares them to the properties of the brown solid. He finds that the properties of the brown solid and black powder are different. Which option below best summarizes Ethan's observation?

• The brown solid changed color and size when he added heat, which means he observed a physical change.

• The brown solid became a new substance when he added heat, which means he observed a physical change

• The brown solid became a new substance when he added heat, which means he observed a chemical change.

• The brown solid changed color when he added heat, which means matter was destroyed by a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4