Presentation on theme: "Measuring Matter and Metric Conversions"— Presentation transcript:
1 Measuring Matter and Metric Conversions Why is SI (metric system) so useful to scientists?One major advantage of the metric system is that it uses the decimal system, where all units are related to smaller or larger units by dividing or multiplying by 10.
2 Metric System SI System of Measurement Originally established in France-17901960 – Revised version called SIInternational System of Units (Le Systé́me International d’ UnitésThe orderliness of this system makes it useful for scientific work and it is used by scientists all over the world.
3 Conversions 1 inch = 2.54 cm 1 foot = 30.5 cm 1 meter = 1.0963 yards 1 kilometer = 0.60 miles1 kilogram = 2.2 pounds1 ounce = 28.3 grams1 liter = 1.06 quarts
6 Kilo 103 Hecto 102 Deka 101 Basic 100 Deci 10-1 meter gram Centi Liter 10-2Milli10-3Mega = MKilo = kHecto = hDeka = daBasic = m meterg gramL liter/ Deci = d/ Centi = c/ Milli = mmillionth Micro = ubillionth Nano = n
7 Conversions Move the Decimal Along the Ladder Convert 10g to kgConvert 1 000mL to LConvert mm to km
8 Making Conversions with Conversion Factors When converting one unit into another, a conversion factor is incredibly useful, but can be a little tricky.Multiply your original value by a fraction that shows therelationship of the unit you start with to the unit into which you are changing.For example:Convert 157 centimeters (cm) into meters (m).157 cm x m/100cm = m
9 Units of Volume to KnowVolume – space occupied by any sample of matterLength x Width x HeightDerived by units of length (meter)10 cm x 10 cm x 10 cm =1000 cm3 =1L1 dm = 10 cm1000 cm3 = 1 dm3 = 1 LMilliliter and cubic centimeter are used interchangeably (1 mL = 1cm3)