Chem 6: Changes in Matter

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A change in the size, shape, or state of matter.

• chemical change

• physical change

Tags

NGSS.MS-PS1-4

Adding baking soda and vinegar together and it fizzes and creates carbon dioxide.

• Chemical
• Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is a chemical change?

• freezing fruit juice

• copper metal turning green

• boiling water

Tags

NGSS.MS-PS1-2

Which of the following tells you that a chemical change may have occurred?

• Change Shape
• Melting
• Vaporizing
• Change in color

Tags

NGSS.MS-PS1-2

What happens in ALL chemical changes?

• Change in state of matter

• A new substance is formed

Tags

NGSS.MS-PS1-2

Is milk going sour a physical or chemical change?

• Physical 
• Chemical

Tags

NGSS.MS-PS1-2

A hand warmer releases energy, which type of change is it?

• endothermic

• exothermic