CHEM 105aLg Lecture Notes - Lecture 1: Decimal Mark, English Units
1. laws describe things that are
consistently and
reproducibly observed
2. physical properties characteristics that can be
determined without changing
chemical composition
3. common physical properties - melting & boiling points
- color
- physical state
- odor
4. heat of fusion the energy required to melt
a solid
5. heat of vaporization the energy required to
vaporize
6. 6 types: phase changes - melting
- freezing
- vaporization
- condensation
- sublimation
- deposition
7. sublimation - phase change from solid to
gas
- ex: dry ice
8. vaporize go from liquid to gas
9. deposition - phase change from gas to
solid
10. in which state of matter do
molecules have the least
amount of interaction?
gas
11. in which state of matter do
molecules have the highest
amount of interaction?
solid
12. where is the metric system of
measurements used?
worldwide
13. where is the English units of
measurement used?
United States
14. where is the SI units of
measurement used?
worldwide, based on the
metric system
15. mass amount of matter in an
object
16. weight amount of force dependent
on gravity
17. water freezing/boiling points
in °Fahrenheit
32° F (freezing)
212° F (boiling)
18. water freezing/boiling points
in °Celsius
0° C (freezing)
100° C (boiling)
19. water freezing/boiling points
in Kelvin
273.15 K (freezing)
373.15 K (boiling)
20. scientific
notation
- move decimal point until you get to a
number between 1 and 10
- count number of decimal places moved and
add 10^n
Lecture 1 (w01d02 - 01/11/17) — CHEM 103
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Document Summary
Lecture 1 (w01d02 - 01/11/17) chem 103. Move decimal point until you get to a number between 1 and 10. Count number of decimal places moved and add 10^n. 1. laws: physical properties, common physical properties, heat of fusion, heat of vaporization, 6 types: phase changes, sublimation, vaporize, deposition describe things that are consistently and reproducibly observed characteristics that can be determined without changing chemical composition. Odor the energy required to melt a solid the energy required to vaporize. Ex: dry ice go from liquid to gas.
