1. SI units prefixes
deci centi milli micro nano kilo mega

2. SI units Kings have diamonds but diamonds cost money
tera- giga- mega- kilo- Unit milli- micro- nano- pico- femto -

3. Mass
Length
Volume
Temperature

4. Conversion factors
Quantity needed = quantity given x conversion factor
5.712g in mg and kg
1g = 103 mg
Conversion factor = 103mg/1g or 1g/103 mg
Use the conversion factor with the same unit in the numerator
5.712g x 103mg/1g

5. Conversion factors
cm  m
kg  g
mL  L
g  μg
kg  mg
mm cm
m  km

6. 5. 2 cm magnesium ribbon in meters (m) 0
5.2 cm magnesium ribbon in meters (m) kg of sulfur in g 160 ml of ethanol in liters 0.025g of vitamin A in μg 0.020kg of tin in mg 150 mg of aspirin in g 2500 ml HCl in liters 0.5 g sodium in kg 55 L of CO2 in ml 35 mm in cm