SCI 4TH MNTHLY

gases

→ Scattered and have unique properties that differ

from solid and liquid

compressible, densely packed

gases’ particles are most _______ and least _____________

lowest

gases have the ____ kinetic energy

LUDWIG BOLTZMANN &

JAMES CLERK MAXWELL

Explained the physical properties of gases

• Found out that the behavior of gases can be

determined in terms of the motion of individual

molecules and the movement of these molecules

is due to the kinetic energy that they possess.

kinetic energy

▪ Energy in motion

▪ Measured in joules (J)

▪ 1 J = 1 kg m2

/s2 = 1 (N)(m)

KINETIC MOLECULAR

THEORY OF GAS (KMT)

• Behavior of gases

Based on the findings of Maxwell and Boltzmann

that led to different generalizations

PRESSURE, VOLUME, TEMPERATURE, AMOUNT OF SUBSTANCE

what are the FOUR PHYSICAL QUANTITIES OF

GASES

directly proportional

FORCE AND PRESSURE HAVE A ______________ RELATIONSHIP

PRESSURE

atmospheric

pressure (atm), millimeter of

mercury (mmHg), torr, and

kilopascal (Pa)

VOLUME

The space occupied by matter

VOLUME

liter (L), milliliter

(mL), cubic centimeter (cm3

), and

cubic meter (m3

).

TEMPERATURE

Measure of how hot or how cold a

substance is

PRESSURE

Force divided by the total surface area

▪ Gas molecules continuously move and

strike the walls of the container and

exert a force.

THERMOMETER

used to measure the

temperature of gases.

TEMPERATURE

degrees Celsius

(

oC), degrees Fahrenheit (oF), and

kelvin (K).

AMOUNT OF SUBSTANCE

How much gas

▪ Measured in moles (mol)

BOYLE’S LAW

The inversely proportional relationship between

the pressure and the volume of a gas.

ROBERT BOYLE

Irish physical scientist

• Investigated the volume of a given sample of

gas and its relationship to its pressure.

P1V1 = P2V2

BOYLE’S LAW FORMULA