1. The International System of Units (SI)

2. Units Length- meters Volume (space)- liter Mass (similar to weight)- grams

3. Prefixes Kilo (k) 1000 Hecto (h) 100 Deka (da) 10 UNIT Meter (m) Liter (l) Gram (g) Deci (d) 1/10 Centi (c) 1/100 Millii (m) 1/1000

5. Conversions To go up the steps, move the decimal to the left the number of steps you are going.

6. Conversions To go down the steps, move the decimal to the right the number of steps you are going.

7. How much space an object takes up

8. Volume Unit- Liter (about a quart) Regular Object - Length x width x height

9. Irregular Objects Use displacement How much water level increases when dropped in a graduated cylinder

10. Irregular Objects How much space it takes up When measuring with a graduated cylinder, use the bottom of the curve (meniscus).

11. Mass- Amount of matter in the object (how many particles) Unit= Gram (about a paper clip) Use a balance

12. Temperature - The average speed of the particles Unit- Degree (Celsius) Use a thermometer

13. Temperature 100 C- water boils (212 F) 21 C- room temperature (about 72 F) 0 C- water freezes (32 F) -273 C- “absolute zero” (-460 F) Particle motion stops!

14. Density - The concentration of matter. Unit- Grams/Liter Divide mass by volume (D=M/V)

15. Density Substances that are less dense will float. Substances that are more dense will sink.