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Chemical Changes
chemical or physical change? | Answer |
---|---|
green bananas becomine ripe and turning yellow | chemical change |
fruit starting to go bad | chemical change |
burning a building | chemical change |
adding sugar to tea | physical change |
steam rising from a lake | physical change |
bike chain starting to rust | chemical change |
a dead tree being chopped down into small pieces | physical change |
hammering a nail into the wall | physical change |
food digesting | chemical change |
water boiling | physical change |
Kool-Aid freezing into popsicles | physical change |
chocolate melting into a liquid | physical change |
water evaporating | physical change |
baking soda and vingear forming bubbles | chemical change |
Is any color change a clue for a chemical change? | No, just an unusual color change. |
a completely new substance is formed | chemical change |
steam condensing into water | physical change |
If a change isn't reversible, is it always a chemical change? | No, it must form something new. |
If light is given off, is it always a chemical change? | Yes |