Q4 - MODULE 1 - KMT - Students' Copy.pptx

SCIQ4 - GRADE 10

1. P = Pressure V = Volume T = Temperature n = quantity Properties that describe a gas.

2. P = Pressure V = Volume T = Temperature n = quantity Properties that describe a gas.

3. Describe as a FORCE acting on an AREA Pressure(P): P = F/a SI Unit: atm , mm Hg, torr , lb /in², kPa 1 atm = 760 mm Hg = 760 torr 1 atm = 101.3 kPa

4. Sample Problem no. 1 A typical barometric pressure in Redding, California, is about 750 mm Hg. Calculate this pressure in atm and kPa . atm = 0.99atm kPA = 100.29 kPa

5. Sample Problem no. 2 A typical barometric pressure in Denver, Colorado, is 615 mm Hg. What is this pressure in atmospheres and kilopascals ? atm = 0.81 atm kPa = 82.05 kPa

6. Space occupied by gas Volume (V): SI Unit: mL, L , m³, cm³ 1L = 1000mL 1mL = 1000cm³

7. Measure the hotness or coldness of a body Temperature (T): Temperature = KE SI Units: (K), ( °C), (°F) Kelvin, Celsius, and Fahrenheit

8. Measure the hotness or coldness of a body Temperature (T): Temperature = KE SI Units: (K), ( °C), (°F) Kelvin, Celsius, and Fahrenheit

9. Measured in moles ( mol ) Quantity (n): 1 mole = 6.022x10²³ (Avogadro’s Number)

10. Kinetic Molecular Theory – motion of molecules (gases) Gas – has no fixed size or shape. Four Properties that describe a gas: Pressure, Volume, Temperature, and Quantity Key Concepts:

11. Pressure – Force acting upon an area Volume – Space occupied by a gas (container) Temperature – measurement of the coldness or hotness of a body Quantity – measured by moles. Indicated by mass. Key Concepts: