1. Density & Temperature
Measurements

2. DENSITY 1 cm3 = 1 mL Density is a derived SI unit. It is defined as:
Density=Mass/Volume
For solids, units are generally g/cm3
For liquids, units are generally g/mL
1 cm3 = 1 mL

3. Relative Density The density of water is 1.0 g/mL (At 4.0°C).
The relative density of any substance can be determined by adding it to water.
If the substance floats, it’s density is less than the density of water:
d < 1.0 g/mL
If the substance sinks, it’s density is greater than the density of water: d > 1.0 g/mL
0.80 g/mL
1.0 g/mL
1.2 g/mL

4. TEMPERATURE
Defined is a measure of the average kinetic energy in matter
Temperature determines the direction of heat flow (always high  low)

5. Comparison of the three temperature scales

6. Temperature Scales *Same size unit!
Fahrenheit (F) - FP of water is set at 32o
BP is set at 212o
*Celsius (C) FP of water is set at 0o
BP is set at 100o
*Kelvin (K) Zero point is Absolute Zero FP of water is set to
One Celsius Degree = One Kelvin Unit
*Same size unit!

7. CONVERSIONS From Celsius toKelvin:
K = C (more precisely, )
From Kelvin toCelsius :
C = K - 273