Physical and Chemical Changes in Substances
Physical Properties
Physical Properties
Observations that
DO NOT CHANGE
the substance or mixture
Chemical Properties
Chemical Properties
Combustibility
Combustibility
Flammability
Flammability
Ability to React
Ability to React
P
P
recipitant is formed (liquids make a
recipitant is formed (liquids make a
Solid
Solid
)
)
E
E
nergy change (
nergy change (
Temperature or Light
Temperature or Light
)
)
C
C
olor change
olor change
-
-
S
S
mell is produced
mell is produced
B
B
ubbles (gas) released
ubbles (gas) released
-
-
P
P
lease
lease
P
P
recipitant
recipitant
E
E
xcuse
xcuse
E
E
nergy change
nergy change
C
C
oughs
oughs
C
C
olor change
olor change
S
S
neezes and
neezes and
S
S
mell produced
mell produced
B
B
urps
urps
B
B
ubbles, gas produced
ubbles, gas produced
It can change size or shape…
It can change size or shape…
(cut)
(cut)
(dissolve)
(dissolve)
It can change phases…
It can change phases…
BUT IT IS STILL THE SAME!!!
BUT IT IS STILL THE SAME!!!
Explore the differences between physical and chemical properties of substances, including observations that do not change the substance or mixture and those that result in something new. Learn to identify signs of a chemical change and remember them with handy cheat sheets. Understand how physical changes may alter the size, shape, or phase of a substance without changing its fundamental nature.
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Presentation Transcript
Physical Properties Observations that DO NOT CHANGE the substance or mixture Smell Touch Measure Hear See Taste
Chemical Properties Describes how the substance or mixture will react with another Combustibility Flammability Ability to React These observations CHANGE it into something new
Physical Changes and Chemical Changes
Signs of a Chemical Change Cheat Sheet! Precipitant is formed (liquids make a Solid) Energy change (Temperature or Light) Color change - Smell is produced Bubbles (gas) released -
TO HELP YOU REMEMBER: Chemical Change Cheat Sheet! Please Precipitant Excuse Energy change Coughs Color change Sneezes and Smell produced Burps Bubbles, gas produced
Signs of a Physical Change It can change size or shape (cut) (dissolve) It can change phases BUT IT IS STILL THE SAME!!!
