Signs of Chemical Change

Adding lemon to milk will create a chemical change called?

• precipitate

• rust

• bubbles

• light

Tags

NGSS.MS-PS1-2

Which of the following signs was not observed when the magnesium burned?

• A precipitate formed

• Light was given off

• Heat was released

• An odor was produced

Fizzing and bubbles are NOT signs of a chemical change, but they are evidence that which sign has occurred?

• heat was released

• light was given off

• a gas was produced

• a precipitate formed

Tags

NGSS.MS-PS1-2

Answer the following question using the Claim, Evidence, & Reasoning model that we practiced this week. Is burning steel wool a physical change or a chemical change & give evidence to support your claim.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

One of the signs of a chemical reaction taking place is:

• Bubbles are produced 

• Reactants are not combining

• Products are not forming

• Color is not changing

Tags

NGSS.MS-PS1-2

Fireworks Exploding are a ________ change.

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A __________________ occurs when one or more substances change into entirely new substances with different properties.

• physical change

• chemical change

• characteristic change

• variable

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Evidence of a chemical reactions is anything that shows - 

• a new substance has formed

• a solid dissolved in a liquid

• interaction between 2 gases

• a change in the state of matter

Tags

NGSS.MS-PS1-2

Which is NOT an indication of a chemical change?

• temperature change

• formation of a precipitate

• shape change

• production of light

Tags

NGSS.MS-PS1-2

Which of the following is a sign of a chemical change?

• A change in color

• A change in shape

• A change in size

• A change in state

Tags

NGSS.MS-PS1-2