1. Measurements, Conversions & Dimensional Analysis

2. International System of Units (SI Units)
SI Base Units
Time: seconds (s)
Length: meter (m)
Mass: gram (g)
Temperature: kelvin (K)
Amount of substance: mole (mol)
Electric current: ampere (A)

3. Derived Units Combination of base units
Volume: liter (L) or milliliter (mL) = 1 cm3
Speed: meters per second (m/s)
Area: meter squared (m2)
Density: grams per milliliter (g/mL)

4. Prefixes How many kilograms are in 2000 grams? 2000 g * 1 kg = 2 kg
Symbol
Factor of base
Scientific Notation
Example
*kilo k
1000
103
kilogram (kg)
deca da 10
decasecond (das)
deci d
0.1
10-1
decimeter (dm)
*centi c
0.01
10-2
centimeter (cm)
*milli m
0.001
10-3
milliliter (mL)
How many kilograms are in 2000 grams?
2000 g * 1 kg = 2 kg
1000g

5. How many millimeters are in 100 centimeters?

6. Dimensional Analysis
Method of problem solving that focuses on the units used to describe matter
Often use conversion factors to solve problems or other mathematical relationships (equation)

7. How many seconds are in 1 hour?

8. If a car is traveling at a speed of 10 m/s, what is its speed in km/hr?