21 Physical Properties Chemical Properties Physical Change Chemical Change Chemical and Physical Changes Brain pop Physical Properties can be observed or measured without changing the substance ID: 439976
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Physical and Chemical Properties …
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Physical Properties
Chemical Properties
Physical Change
Chemical ChangeSlide3
Chemical and Physical Changes Brain popSlide4
Physical Properties
can be observed or measured without changing the substance.
Ex. Density
mass
state of matter (solid, liquid, gas)
solubility –dissolveBoiling pointSlide5
Physical Change
a change that occurs that does not change the identity of the substance
Can be reversed
Ex.
Cutting your hair
Melting Chewing your food
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Chemical Properties
Any characteristic that gives a substance the ability to undergo a change
React with air, acid or water
Flammability
CorrosionSlide7
Chemical Change
a change that occurs causing the identity of the substance to change
Can’t be reversed
Ex. Spoiling milkRusting a carDigesting food
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Is it Physical or Chemical?
Change
Physical
Chemical
Melting cheese
Burning charcoal
Meat spoiling
Wadding up paper
Fence rustingSlide9
Chemical Reactions…back
of
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Examples of Chemical Reactions
Baking soda and vinegar
Alka seltzer and waterSlide10
Signs of a chemical change
Produces light
Produces heat
Creates a gas(bubbles)
Color change
Formation of a precipitate (solid, gel, powder)