1. Table of Contents Lab safety contract/quiz 1 Element Pun 3 Scientific Method Notes 5 Lab Equipment 7 Measurement Notes 9 Metric Units 11 Scientific Notation and Sig Figs 13 2 How to write a lab report 4 Ch. 1 Vocab 6 Dancing raisins/ concept map 8 Lab Map 10 Making Measurements Lab 12 Dimensional Analysis 13 Sig fig/ Sci not. practice

2. pg. 13 Metric Units

3. SI Units SI units-a standard set of units scientists use to measure quantities Allows for consistency around the world

4. SI Base Units MeasurementSI Base UnitSymbol of units LengthMeterm MassGramg VolumeLiterL TimeSeconds TemperatureKelvinK Amount of substance Molemol

5. SI Prefixes Factor Namesym 10 6 megaM 10 3 kilok -----------Base Unitm, L, sec, g 10 -1 decid 10 -2 centic 10 -3 millim 10 -6 micro µ 10 -9 nanon

6. Derived Units Combinations of base units Example Area m 2 Volume cm 3 Density g/cm 3

7. Dimensional Analysis A way to convert from one prefix or unit to another prefix or unit. Multiplying fractions

8. Steps to convert between SI units 1. Start with what you are given (add a x and a fraction ) 2. Place the given unit on the bottom of your ‘fraction’ so it will cancel out. Then place the desired unit on top. 3. Place a 1 in front of the larger unit Place the value for the smaller unit in the empty space 4. multiply numbers on the top and divide numbers on the bottom Ex. how many cm in 1.5 m? 1.5 m x = cm m cm100 1 150

9. Check yourself Smaller unit to bigger unit=smaller number bigger unit to smaller unit= bigger number

10. Conversion between different unit Use known relationships between units ex. 12 inches=1 foot Start with given # Place given unit on bottom of ‘fraction so it will cancel out. Place a 1 in front of larger # Keep using relationships until you arrive at desired unit.

11. Example Convert 1 mile into inches. 1 mile=5,280 feet