Science 10 Quarter 4

• Volume is the space occupied by gas.
• Compressibility is the property of gas which allows it to decrease in size when pressurized.
• Barometer is the instrument used to measure atmospheric pressure.
• Temperature is dependent on the kinetic energy of the gas particles.
• The higher the temperature, the faster the molecules move.
• Pressure is the amount of force per unit area exerted by gases on the walls of its container.
• Boyle's Law states that at constant temperature, the volume of a given mass of gas varies inversely with the applied pressure.
• Charles' Law states that at constant pressure, the volume of a given mass of gas increases or decreases as its absolute temperature changes.
• Avogadro's Law states that equal volumes of all gases contain an equal number of molecules under similar conditions of temperature and pressure.
• Gay-Lussac's Law states that at constant volume, the pressure of a fixed quantity of gas varies directly with the absolute temperature.
• Dalton's Law states that when two or more gases are mixed together in a closed container, they will separate into their individual components if allowed to do so.
• Atmosphere is the standard unit of pressure.
• Kelvin is the standard unit of temperature which is 273.15K.
• Density is the measure of mass per unit volume.