Chemical Reactions - 8.5E

What is the first indication that a chemical reaction is happening?

• Color change

• Gas

• Light

• Temperature change

• Precipitate formed

What would the growing brown stuff be?

• Gas

• Precipitate

Is something new forming from the white powder?

• Yes

• No

What evidence of a chemical reaction are you seeing now?

• The glow is evidence that light is being given off.

• The glow is evidence that precipitate is being formed.

Notice the bubbles at the bottom of the substance.

What is that evidence of?

• Color change

• Gas is being given off

• Light

• Temperature change

• Precipitate