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Systeme International base units (SI Units) LengthMeterm Massgramg VolumeLiterL TimeSeconds TemperatureKelvinK HeatJouleJ.

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Presentation on theme: "Systeme International base units (SI Units) LengthMeterm Massgramg VolumeLiterL TimeSeconds TemperatureKelvinK HeatJouleJ."— Presentation transcript:

1 Systeme International base units (SI Units) LengthMeterm Massgramg VolumeLiterL TimeSeconds TemperatureKelvinK HeatJouleJ

2 WrittenSymbolExponentialDecimal giga mega GMGM 10 9 10 6 1 000 000 000 1 000 000 kilok10 3 1 000 Base unit10 0 1 decid10 -1 0.1 centic10 -2 0.01 millim10 -3 0.001 micro Nano µNµN 10 -6 10 -9 0.000 001.000 000 001

3 Heat - measure of the quantity or how much energy Temperature - measure of the intensity or how energetic each particle is

4

5 Temperature Conversion K = °C + 273 °C = 5/9 (°F – 32) °F = 9/5 * °C + 32

6 Density - The amount of mass per unit volume Density = Mass D = M Volume V

7 Specific Gravity Numerically the same as density but has no units. It is still a mass/volume It is a comparision to water as the standard that has a density of 1.00 g/mL at 20 ºC If Lead has a density at 20 ºC of 11.35 g/mL It is 11.35 times more dense than water So the specific gravity for Lead is reported as 11.35

8 calorie The amount of heat needed to raise the temperature of one gram of liquid water by 1 ºC

9 1 kcal = 1000 cal 1cal = 4.184 J 1000 cal = 1 C (food calories)

10 Specific heat The amount of heat (in calories) necessary to raise the temperature of 1 g of any substance by 1 ºC.

11 Amount of heat = Specific heat x mass x change in temp Heat = SH x m x (T 2 – T 1 )


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