1. Mass, density, temperature, weight and length & Unit conversion review

2.  On Friday you will be doing a pre – test.  On Wednesday you will be doing a Iodine –clock reaction lab.  Next week Tuesday is the Unit test for this topic.

3.  Please do the EDD side of your measurement sheet.

4. 1cm Sand Meter Stick BalanceSpring ScaleGraduated Cylinder Mass/Volume Thermometer Metric System Length (L) Mass (M) Weight (W) Volume (V) Density (D) Temperature (T)

5.  Liter – is the basic unit of volume in the metric system 1 Liter = 1 L  Milliliter – is one thousandth of a Liter 1 mL = 1/1000 L = 0.001 L  Milliliters and Liters are used to measure the volume of liquids  Cubic centimeters – is the metric unit used to measure the volume of solids  A cubic centimeter is equal to the volume of a cube that measures 1 cm by 1 cm by 1 cm (cm 3 ). A volume of a cubic centimeter (cm 3 ) is exactly equal to the volume of one milliliter. 1cm = 1 cm 3 = 1 mL 1cm

6.  Kilogram – the basic unit of mass in the metric system 1 kg = 1000 grams  Gram – one thousandth of a kilogram 1 g = 1/1000 kg = 0.001 kg 1000 g = 1 kg  Milligram – one thousandth of a gram 1 mg = 1/1000 g = 0.001 g 1000 mg = 1 g

7.  Gravity - a force of attraction between two masses.  The strength of the gravitational force between two objects depends on the masses of the objects and the distance between them: a)The greater the mass, the greater the gravitational force. b)The greater the distance between the two objects, the weaker the gravitational force between them  Newton (N) - the basic unit of weight in the metric system.

8.  An object has a universal mass, but may have different weight depending on gravity.  The mass of an object does not change.  The weight of an object changes as a result of changes in gravity.  A pineapple on earth weighs more than on the moon because the earth’s gravity is greater. But the pineapple’s mass always remains the same wherever you go (unless you get hungry and eat it!).

9.  Density = mass/volume (units are usually g/mL) The density of water = 1.00 g/mL This means that one gram of water occupies one milliliter of volume. The density of oil = 0.91 g/mL If lighter fluids float on heavier fluids, do you expect water to float on oil?

10.  Celsius = a unit of temperature in the metric system  Water freezes at 0° C.  Water boils at 100° C.  Normal body temperature is 37° C  Room temperature is 21° C.

11.  Kelvin = another unit of temperature in the metric system.  The lowest possible temperature is 0 Kelvin (-273 ° C). This is Absolute Zero.  To convert from Celsius to Kelvin: K = C + 273°

12. KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit CENTI 0.01 Unit MILLI 0.001 Unit Meters Liters Grams Ladder Method How do you use the “ladder” method? 1 st – Determine your starting point. 2 nd – Count the “jumps” to your ending point. 3 rd – Move the decimal the same number of jumps in the same direction. 4 km = _________ m 1 2 3 How many jumps does it take? Starting Point Ending Point 4. 1 __. 2 3 = 4000 m

13. Try these conversions using the ladder method. 1000 mg = _______ g 1 L = _______ mL160 cm = _______ mm 14 km = _______ m109 g = _______ kg 250 m = _______ km Conversion Practice Compare using, or =. 56 cm 6 m 7 g 698 mg

14. Unit conversion sheet Please complete the rest of the unit conversion sheet.