Atm

Question 1

Gases are all around us . We live in the“sea of gases”. Gases show characteristic behavior that affects us and the environment. Therefore, it is important to understand some fundamental
laws that govern the behavior of
gases.

Answer 1

Gas Law

Question 2

• have very low density
  -have no definite volume and shape.
  -exert pressure as measured in gauge.

Answer 2

Gases

Question 3

-useful property matter. As a general rule, less dense substance
rises, while more dense substances sinks.

Answer 3

Density

Question 4

is responsible for the spread of odors

Answer 4

Diffusion

Question 5

The properties of gases can be explained

Answer 5

Kinetic molecular theory

Question 6

Objects in motion have
energy

Answer 6

Kinetic energy

Question 7

are composed of atoms or molecules which are widely separated.
-Gas molecules move at very high speeds,

Answer 7

Gases

Question 8

Molecules of gases occupy space. It may be proven when the gas
fills its container
-which is one of the measurable properties of the gas, is denoted by
its symbol V. Its SI unit is cubic meter (m³).

Answer 8

Volume

Question 9

Is the force exerted by the gas per unit
area

Answer 9

Pressure

Question 10

is taken as the pressure exerted
by the atmosphere at sea level under normal conditions. This value is used as a standard and designated as 1 atmosphere ( 1 atm ).

Answer 10

Standard atmospheric pressure

Question 11

can be measured with a Barometer.
Evangelista Torricelli
-the inventor of mercury barometer.

Answer 11

Atmospheric pressure

Question 12

the inventor of mercury barometer.

Answer 12

Evangelista Toricelli

Question 13

Gases expands when temperature is increased. The temperature is denoted by the symbol T. Temperature of the gas is
generally expressed in Fahrenheit (⁰F ) , Celsius ( ⁰C ) and Kelvin ( K ).

Answer 13

Temperature

Question 14

Temperature is measured with the help of a

Answer 14

Thermometer

Question 15

only works if the gas is help in constant temperature.
- Pressure-Volume Relationship

Answer 15

Boyle’s Law

Question 16

The British physicist and chemist

Answer 16

Robert Boyle

Question 17

was able to Investigate the pressure – volume relationship of air.

Answer 17

Robert Boyle

Question 18

The French scientist , showed at a constant pressure
, the volume occupied by the fixed quantity
• Of gas increased with increasing temperature.

Answer 18

Jacques Alexander Charles

Question 19

As the temperature increases, the
volume increases”

Answer 19

Charles Law

Question 20

a French chemist, demonstrated that at constant volume ,
the pressure exerted by a given amount of gas increased as the temperature is
increased.

Answer 20

Joseph Gay lussac

Question 21

states that at constant volume , the pressure exerted by a given
sample of gas is directly proportional to its absolute temperature.

Answer 21

Gay’s lussac law

Question 22

T²=V²T¹/V¹

Answer 22

Final Temperature (Charles Law)

Question 23

P²=T²P¹/T¹

Answer 23

Final Pressure (Gay lussac law)