The Metric System What is the Metric System

The Metric System

What is the Metric System? The standard measurement system for science All sciences use the metric system (including this class) Conversions will be a necessary skill not only for this class, but for chemistry and physics This system is much easier to use than the English Imperial System

Common SI Units Measurement _____ _____ Electric current _____ Unit Abbreviation Meter m kilogram kg Second s Kelvin K ampere A liter L

Prefixes for LARGE Measurements Prefix Symbol Decada Hecto- h Kilok Mega. M Giga. G Meaning ________ ____ Mult. Of Base 10 100 1, 000, 000 Power 10 10 2 103 106 109

Prefixes for small Measurements Prefix Symbol Deci__ Centi__ Millim Micro u Nano __ Meaning Mult. Of Base tenth 0. 1 hundredth 0. 01 _____ 0. 001 _______ 0. 000001 billionth 0. 00001 Power 10 -1 10 -2 10 -3 10 -6 10 -9

Conversion Steps 1. Rewrite given number, write in decimal (if not present) 2. Find the beginning and ending units on your conversion chart 3. Count how many times you ‘jump’/ Which way do you move? 4. Draw in jumps from beginning decimal/ Draw a new decimal and cross out the beginning decimal 5. Add zeros in the jumps 6. Write your final answer with the new unit

Examples 1. 85 m = ______cm 2. 3. 5 km = ______cm 3. 4. 6 km = ______ mm 4. 298 m = ______ km 5. 455 cm = ______km

More Practice 1. 0. 55 km = ______mm 2. 1, 549 cm = _____m 3. 2. 1 Mm = ______m 4. 22, 543 um = ______cm 5. 72 cm =________um