Chemical Reactions

Frying Eggs

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Toasting Bread

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Burning Wood

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Rotting Fruit (Like a brown banana)

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is not evidence that a chemical reaction has occured

• Production of flames

• Change in temperature or heat

• freezing

• Production of light

Tags

NGSS.MS-PS1-2

Conservation of matter applies to physical and chemical changes

• True

• False

Tags

NGSS.MS-PS1-5

The mixing of two or more substances can result in a new substance.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Serena mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. She analyzed the results and found two ending substances. One of the ending substances was a white solid. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples Serena mixed together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. She mixed two solid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.

After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?  

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Damian mixed two samples together: a red liquid that smells irritating and a black solid with no smell. He analyzed the results and found two ending substances. One of the ending substances was a yellow solid. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples Damian mixed together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2