chemistry unit 1 part 3

1. Unit 1
SI UNITS

2. Units used in chemistry

3. SI units:
SI Base Units
Quantity SI base
unit
Symbol
Length meter m
Mass kilogram kg
Temperature kelvin K
Time second s
Amount of
substance
mole mol

4. Memorize:
1000 mg = 1 g
1000 g = 1 kg

5. Temperature conversions:
Celsius
Kelvin
100
divisions
100
divisions
100°C
Boiling point
of water
373.15 K
0°C
Freezing point
of water
273.15 K
Celsius + 273.15 = kelvin

6. Density

7. Density
0.53 g/cm3
10 g 10 g10 g 10 g
19 cm3
10 cm3 3.7 cm3
0.88 cm3
1.0 g/cm3
2.7 g/cm3 11.4 g/cm3

8. Sink or float?
It’s all about density. . .