Chemical Properties

Which is an example of a chemical change?

• frying an egg

• boiling water

• melting butter

• chopping onions

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which laboratory activities involve chemical changes?

• leaving a copper penny in vinegar until it turns green

• boiling saltwater for several minutes until only solid salt remains

• extracting iron filings from a sand mixture using a magnet

• crushing a rock with a hammer to extract mineral deposits

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Jenna took an open bowl of leftover mashed potatoes from the refrigerator. She determined that chemical changes occurred since the potatoes were first placed there.

Which observations most likely led to Jenna’s conclusion?

• a production of odor

• a decrease in temperature

• a change in moisture content

• a decrease in mass

Tags

NGSS.MS-PS1-2

Reacts with Acid: Chemical or Physical Property

• Chemical Property

• Physical Property

Tags

NGSS.MS-PS1-2

Reacts with Water: Chemical or Physical Property

• Chemical Property

• Physical Property

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this an example of a physical or chemical change?

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

can only be recognized when substances react or do not react chemically with one another.

• Physical properties

• Chemical properties

• Flammable properties

• Colorful properties

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Flammability means the ability to _______ and is a _________ property.

• melt; chemical

• rust; physical

• change; physical

• burn; chemical

___________ is the ability to conduct electricity.

• Reprocity

• Conductivity

• Density

• Sublimation

Tags

NGSS.HS-PS2-5