1. Cla s s ific a tio n o f
M tte r
a
Theoretical Chemistry

2. M te ria ls
a
Specific types of matter
Described according to
phase (solid, liquid, gas)

3. Pure Subs ta nc e s
Contain only one type of
matter
Cannot be separated
physically

4. Pure Subs ta nc e s
Elements - simplest pure
substances made of only
one type of atom (Periodic
Table)

5. Pure Subs ta nc e s
Compounds - – two or more
elements chemically
combined (H2O, CuSO4)

6. M ture s
ix
Physical combination of two
or more substances
Can be separated physically

7. He te ro g e ne o us
M ture s
ix
Substances can be easily
distinguished and separated
Ex: sand and salt, iron and
sugar, sand and gravel

8. Ho m o g e ne o us
M ture s
ix
Substances are well mixed
and appear the same
throughout
Ex: Solution

9. So lutio ns
Solute dissolves in solvent to
form solution.
Concentrated solution contains
more solute than dilute solution.
Ex: Kool-Aid, iced tea, coffee

10. Ex te ns ive Pro p e rtie s
Depend on sample size
Specific to a single object
Ex: length, mass, diameter

11. I ns ive Pro p e rtie s
nte
Do not depend on sample size
Used to identify types of matter
All physical and chemical
properties are intensive

12. Phy s ic a l Pro p e rtie s
Describe substances
undergoing physical changes
Ex: density, color, texture,
conductivity, malleability,
ductility, boiling point, melting
point

13. Che m ic a l Pro p e rtie s
Describe substances
undergoing chemical
changes
Ex: flammability,
corrosiveness, volatility

14. Phy s ic a l Cha ng e s
Same substance remains after
change
Used to separate mixtures
Ex: pounding, tearing, cutting,
dissolving, evaporating,
melting, boiling, pulling

15. Che m ic a l Cha ng e s
Results in new substance with
new properties
Also known as a chemical
reaction
Ex: burning, digesting,
fermenting, decomposing

16. Che m ic a l Cha ng e
Evid e nc e forms (solid)
1. Precipitate
2. Gas evolves (bubbles)
3. Color change
4. Energy change
Return to Ms. Ca
• Exothermic = releases energy
• Endothermic = absorbs energy
5. Odor produced (sometimes)