Ch 2.1: UNITS & MEASUREMENTS
To Remember
Conversion Units:
1 km = 1000 m
1 meter = 100 cm
1 cm = 10 mm
1 Kg = 2.2 Pounds
1 Kg = 1000 g
1 g = 1000 mg
Temperature Conversion:
Example:
1) Convert 32⁰F to ⁰C
2) Convert 0⁰C to K
Derived Units
a. Volume
Volume is the space occupied by an object
b. Density
It is a physical property of matter. It is the
amount of mass per unit volume.
Volume = length x width x height
SI Unit = m3
Also measured in Liters (L)
1 L = 1 dm3
1 mL = 1 cm3
1 L = 1000 mL
SI Unit = g/cm3
Example: Find the density of an object that has a
mass of 8g and occupies a volume of 3 mL.
Answer: Density = mass / volume
= 8 / 3 = 2.667 g/mL