Physical_ vs. chemical_ propertiesppt.ppt

physical and chemical properites

1. Physical vs. Chemical Properties

2. Physical Property
•Any property that can
be observed without
changing the
composition of the
substance

3. 5 Senses
•Sight
•Smell
•Taste
•Touch
•Hearing

4. Viscosity
•Tendency of a fluid to
keep from flowing
•The greater the
viscosity, the slower the
liquid moves

5. Conductivity
•Material’s ability to
allow heat or electricity
to flow

6. Malleability
•Ability of a material to
be shaped or
hammered without
breaking

7. Hardness
•Ability of a material to
be scratched

8. Melting & Boiling Points
•Each substance has
their own
•Can be used to identify
a substance

9. Density
•Mass/volume
•Can be used to test the
purity of a substance

10. Chemical Properties
•Ability to produce a
change in the
composition of matter
•Can be observed only as
the matter is changing

11. Flammability
•Material’s ability to
burn in the presence of
oxygen

12. Reactivity
•How readily a substance
combines chemically
with other substances

13. •What are some differences between chemical
& physical properties?

14. •What properties (physical or chemical) are
helpful in identifying a substance?