Physical and Chemical Changes

Which would be a chemical change?

• ice cubes melting in a glass of water

• wood burning in a campfire

• power plants providing electricity to a city

• butter melting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mixing food coloring and water is an example of a ________ change

• chemical

• Physical

Which is an example of a physical change?

• a candle burning

• rust forming on a bike

• ice cream melting

• a firework exploding

Tags

NGSS.MS-PS3-4

Which are signs of a chemical change?

• change of mass

• formation of a gas

• formation of a mixture

• change in temperature

Tags

NGSS.MS-PS1-2

Baking soda and vinegar combined form carbon dioxide (a gas). This is an example of a _______ change

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which kinds of change alters the shape of an object without changing the type of matter that is it?

• physical change

• chemical change

• gradual change

• sudden change

What is the physical combination of two or more substances put together without forming a new substance called?

• chemical change

• mixture

• physical change

• solution

Which example best describes a physical change?

• baking a pie
• burning a candle
• making a paper airplane
• mixing vinegar with baking soda

Brad accidentally left his crayon box in the car on a hot day. Which best explains what happened to his crayons?

• crayons melted; changed from solid to liquid 
• crayons melted; changed from liquid to solid
• crayons evaporated; changed from liquid to solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is the best example of a change that can be undone?

• clay put in an oven to harden
• cake batter put in an oven to bake
• chocolate left in a warm car to melt
• wood being burnt