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Properties of Matter
Which animal matches the definition: “a small domestic mammal?”
CATCAT
Raise your hand and give one characteristic of a cat.
Definition: to state meaning; show clearly the form
Describe: represent in words; give a detailed account
Physical Property: can be observed with out changing the composition of matter, “Observable”
Examples: color, taste, odor, hardness, melting point, boiling point, conductivity, density
Intensive Physical Property: independent of amount of matter present (sample size)
Examples: density, color, melting point
Extensive Physical Property: depends on the amount of matter present
Examples: mass, volume, length
Chemical Property: observed only when the substance interacts, “Behavioral”
Examples: flammability, combustibility, reactivity, corrosion
a. Physical Intensive
b. Physical Extensive
c. Chemical
_____ 1. color
_____ 2. tendency to rust
_____ 3. boiling point
_____ 4. density
_____ 5. mass
_____ 6. ability to burn
_____ 7. malleability
_____ 8. length
a
c
a
a
b
c
a
b
Physical Change: a type of change that alters the physical properties of a substance but does not change its composition.
Example: tear, bend, grind, crumple, split, crush
Also includes changes in state: melt, freeze, boil, condense
Chemical Change: a process involving one or more substances changing into new substances; also called a chemical reaction.
Examples: explode, rust, oxidize, corrode, tarnish, ferment, burn, or rot
1. ↑ or ↓ in Temperature.2. Release of a gas.3. Change in color (that you did not cause).4. Production (or change) in odor.5. Formation of a precipitate.
Precipitate: an insoluble solid that separates from a solution.
1. Burning Gasoline
2. Magnesium burning in Oxygen
3. Cracking an egg open
4. Nitroglycerin exploding
5. Freezing water
6. Methane melting
7. KCl + AgNO3 → Solid AgCl
8. Water Boiling
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Chemical
Chemical
Physical
Chemical
Physical
Physical
Chemical
Physical
Mrs. D has placed on object in the front of the room. Observe this object carefully. On the index card write down your name, the object, and answer the following:
1. Name one physical property. Is it intensive or extensive?2. Name one chemical property.3. Name one way this object could be changed physically?4. Name one way this object could be changed chemically?