5 Physical & Chemical Change

A chemical reaction produces ...

• a new substance

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Molecules are the same before and after the change, although the matter may look different in a ...

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

Physical changes include ...

• cutting, bending, melting

• baking, burning, digesting

Tags

NGSS.MS-PS1-4

A new and different molecule is formed in a ...

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

Chemical changes include ...

• cutting, bending, melting

• baking, burning, digesting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In our experiment, we put baking soda and calcium chloride in the ziplock bag. These are the ...

• reactants

• products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Then we ended up with salt, chalk, carbon dioxide and water in the bag. These are the ...

• reactants

• products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What changes did we observe during the chemical reaction in the ziploc bag?

• heat

• color change to yellow-orange

• gas

• all of the above

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

If I baked a dozen chocolate chip cookies that would be an example of a ...

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If I chopped up a log to make smaller pieces of wood for a fire that would be an example of a ...

• physical change

• chemical change