Physical vs Chemical
Melting Ice Cube
Solid to Liquid is called
Melting
Melt or become a liquid
When you mix BAKING SODA and VINEGAR ... what happens?
Chemical Reaction
A gas is released
It can blow up a balloon
Fizz/Bubble
Fireworks Exploding
Chemical Change
Liquid to Gas is called
evaporation
Condense or become a liquid
salt + water weighed separately will weigh
LESS than MORE than SAME as
when mixed together
SAME as
Rust on a Car Door
Chemical Change
Liquid to Solid is called
Freezing
When heat energy is taken from a liquid then it will _________
Freeze or become solid
Physical Change
Name 3 Physical Changes
(that haven't been listed)
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The process of changing water vapor to liquid water is called ...
Condensation
When water becomes ice ...
a. HEAT energy is being ADDED to the water
b. HEAT energy is being TAKEN from the water
b. heat energy is being taken from the water
What is a sign that a chemical reaction occurred (think how you tested if something is an acid)?
1. Fizz/Bubble
2. Curdle
3. Slime/Gooey
4. Color Change
Name 3 Chemical Changes
(that haven't been listed)
...
Evaporation
What happens during evaporation ....
a. a solid takes in heat energy (to be a liquid)
b. a liquid gives off heat energy (to make a gas)
c. there is no change
d a liquid takes in heat energy (to make a solid)
b. a liquid gives off heat energy
Explain the 3 parts of Chemistry in a Bag
Pt 2 = Orange & Hot
Pt 3 = Color change - Yellow & Gas filled Bag