1. Q: What is the Metric System? Called the System International (French) The metric system is used by all scientists and by everyone in most countries (except us!). WE will be working with 6 base units

2. 6 base units Standard Measurement Length Mass Time Temperature Amount of Substance Volume Name of Unit Meter Gram Second Centigrade (Celcius) Mole Liter Symbol m g s C Mol L

3. Prefixes for LARGE Measurements Prefix= Mega Symbol= M Meaning= Million Multiple of Base Unit= 1,000,000 aka. How much bigger is it than just one base unit? EXAMPLE: 1 Megameter (Mm)= ______ Meters 1 Megameter = 1,000,000 Meters

4. Prefixes for LARGE Measurements Prefix= Kilo Symbol= K Meaning= Thousand Multiple of Base Unit= 1,000 aka. How much bigger is it than just one base unit? EXAMPLE: 1 Kilogram (Kg)= ______ Grams 1 Kilogram = 1,000 Grams

5. Prefixes for LARGE Measurements Prefix= Hector Symbol= H Meaning= Hundred Multiple of Base Unit= 100 aka. How much bigger is it than just one base unit? EXAMPLE: 1 Hectosecond (Hs) = ____ seconds 1 hectosecond = 100 seconds

6. Prefixes for LARGE Measurements Prefix= Deka Symbol= Dk, Da Meaning= Ten Multiple of Base Unit= 10 aka. How much bigger is it than just one base unit? EXAMPLE: 1 Dekamole (Dkmol)= ______ Moles 1 Dekamole = 10 Moles

7. Prefixes for SMALL Measurements Prefix= deci Symbol= d Meaning= tenth Multiple of Base Unit= 1/10 or 0.1 aka. How much bigger is it than just one base unit? EXAMPLE: 1 decimeter (dm) = ______ Meter 1 decimeter = 1/10 Meter

8. Prefixes for SMALL Measurements Prefix= centi Symbol= c Meaning= hundreth Multiple of Base Unit= 1/100 or 0.01 aka. How much bigger is it than just one base unit? EXAMPLE: 1 centigram (cg) = ______ gram 1 centigram = 1/100 gram

9. Prefixes for SMALL Measurements Prefix= milli Symbol= m Meaning= thousandth Multiple of Base Unit= 1/1000 or 0.001 aka. How much bigger is it than just one base unit? EXAMPLE: 1 millisecond (ms) = ______ second 1 millisecond = 1/1000 second

10. Prefixes for SMALL Measurements Prefix= micro Symbol= µ Meaning= millionth Multiple of Base Unit= 1/1,000,000 or 0.000001 or 1x10 -6 aka. How much bigger is it than just one base unit? EXAMPLE: 1 micromole (µmol) = ______ mol 1 micromole = 0.000001 mol