properties of gases

1. PROPERTIES OF GASES
MARIBEL L. NAYAD, MAEd
maribe.nayad@deped.gov.ph
SCIENCE 10 Unit 4 Module 1

2. CONTENT STANDARD:
The learners demonstrate understanding of:
1. how gases behave based on the motion and relative distances
between gas particles (S10MT-IVa-b-21).
PERFORMANCE STANDARD:

3. Learning Competency:
The learners should be able to…
1. investigate the relationship between:
1.1 volume and pressure at constant temperature of a gas;
1.2 volume and temperature at constant pressure of a gas;
1.3 explains these relationships using the kinetic molecular
theory;
•

4. In this lesson, you’ll be able to:
1. investigate the relationship between:
1.1 volume and pressure at constant temperature of a gas.
PROPERTIES OF GASES
SCIENCE 10 Unit 4 Module 1

5. compressibility expandability
gas occupy more space

6. PROPERTIES OF GASES
gases can flow
like liquids

7. PROPERTIES OF GASES
gases are
colorless

8. PROPERTIES OF GASES
gases have
low density
and viscosity

9. PROPERTIES OF GASES
• Density
• Mass
• Volume
• Temperature
• Pressure

10. PROPERTIES OF GASES
• Density- the mass per unit volume.
• Mass- the amount of material that a
body contains.
• Volume- the space occupied by the
gaseous particles at standard
temperature and pressure conditions.

11. PROPERTIES OF GASES
• Temperature quantitative measure of
how hot or cold something is.
• Pressure the force exerted per unit
area.

12. Commonly Used Units for Volume,
Pressure and Temperature

16. Standard Temperature
and Pressure

18. Kinetic Molecular Theory

20. Gas Law

26. Problem #2
2. A sample of a gas occupies a
volume of 145ml at a pressure of
560 torr and a temperature of
20ºC. Calculate the new pressure
if the volume is increased to
290ml at a constant temperature.

27. Problem #3
3. A given mass of hydrogen
occupies 20.0L at 600 torr
pressure. What volume will it
occupy at 1.50 atm pressure?
Conversion:
1 atm= 760 torr

28. Seatwork
1. A 142 ml of a gas measured at 480 torr
pressure is allowed to expand to a volume
of 200ml at constant temperature.
2. Oxygen gas inside a 1.5L gas torr has a
pressure of 0.95 atm. Provided that the
temperature remains constant, how much
pressure is needed to reduce its volume by
½?