4th quarter

Gases is one of the phases of matter. It has no definite shape and size. It can be

compressed easily. Properties of gases include mass, volume, temperature, and

pressure. The properties of gases can affect one another. They are related to each

other. The properties of gases can be varied. The relationships of these properties

can be quantified experimentally with the aid of the different laboratory apparatus

or by using the different gas laws.

After going through this learning material, you are expected to attain the

following objectives:

Most Essential Learning Competency:

• Investigate the relationship between volume an pressure at constant

temperature of a gas; volume and temperature at constant pressure of a

gas; explains these relationships using kinetic molecular theory (S10MTIVa-

b-21)

Specifically, you should be able to:

1. Recognize the symbols used to describe gases such as n, P, R, T, V and STP;

2. Explain the interrelationships of pressure, volume and temperature

3. Solve problems involving changes in the condition of the gas using the

equations for Boyle’s Law, Charles’ Law, Combined Gas Law, Gay-Lussac’s

Law, Avogadro’s Law, Ideal Gas Law

4. Describe how gas density is related to pressure, temperature, and number of

moles by the ideal gas law.

5. Determine the application of gas laws in daily occurrences.