States Of MatterStates Of Matter

K 2.3 Behavior of Liquids and GasesK 2.3 Behavior of Liquids and Gases

Liquids and GasesLiquids and Gases

Diffusion – the gradual mixing of particles Diffusion – the gradual mixing of particles until there is an even distributionuntil there is an even distribution

Pressure – amount of force applied over Pressure – amount of force applied over an areaan area

Pressure (Pa) = Force (N) / Area (mPressure (Pa) = Force (N) / Area (m22)) If 8 N of force is applied onto a square If 8 N of force is applied onto a square

with one side being 2 m long, how much with one side being 2 m long, how much pressure is applied?pressure is applied?

Liquids and GasesLiquids and Gases

Pascal’s principle – when pressure is Pascal’s principle – when pressure is applied to a gas, all the gas molecules applied to a gas, all the gas molecules will feel the same amount of pressure.will feel the same amount of pressure.

Increase in temperature increases Increase in temperature increases pressure because it increases the kinetic pressure because it increases the kinetic motion and increases the number of motion and increases the number of collisionscollisions

Atmospheric pressure decreases as you Atmospheric pressure decreases as you go up in altitudego up in altitude

Liquids and GasesLiquids and Gases

As atmospheric pressure decreases, As atmospheric pressure decreases, boiling points of liquids decrease as well.boiling points of liquids decrease as well.

All matter has density.All matter has density. Density is the relationship between mass Density is the relationship between mass

and volumeand volume Density (g/mL) = mass (g) / volume (mL)Density (g/mL) = mass (g) / volume (mL) Buoyancy – decrease in weight caused Buoyancy – decrease in weight caused

by an upward forceby an upward force

Liquids and GasesLiquids and Gases

Archimede’s Principle – an object in Archimede’s Principle – an object in water is lighter by the mass of the total water is lighter by the mass of the total amount of water displaced.amount of water displaced.

What is the density of a 16 lb bowling ball What is the density of a 16 lb bowling ball that has a volume of 2 mthat has a volume of 2 m33??