Acid-base titrations are monitored by the change of pH as titration progresses. Let us be clear about some terminologies before we get into the discussion of titration curves. Titrant : solution of

2. A man and a woman went to a
restaurant for dinner. While they
were waiting for the main dish,
she ordered 5 drinks with ice
because it was very hot. The woman
drank 4 of them all at once, while
the man only drank one. After a
while the man became ill and died.
The doctors said that all the
drinks were poisoned.

3. The poison was in the ice. Since
the woman had her drinks quickly,
the ice didn't have time to melt.
The man drank slowly and the
poison melted into his drink.

4. KINETIC
MOLECULAR
THEORYOF MATTER

5. RECAP
Matter is composed of small particles
called “Atom”.
Compounds are composed of molecules
bonded to each other with a force
called “intermolecular forces”

6. RECAP
There are three phases of matter:
SOLID
LIQUID
GAS

7. In this lesson, we will talk
about the behavior of these
molecules and how it governs the
properties of matter.

8. GROUP ACTIVITY

9. BEFORE THE ACTIVITY
• What do you understand about the
Kinetic Molecular Theory?
• How would you describe the states
of matter (solid, liquid, gas)
based on particle motion?

10. DURING THE ICE
MELTING
• Observe a piece of ice. What state
of matter is it in?
• Can you describe the arrangement
and motion of particles in the
ice?
• As the ice starts to melt, what
changes do you notice in the

11. DURING THE ICE
MELTING
• What do you think is happening at
the molecular level as the ice
melts?
• Are the particles in the ice
gaining or losing energy during
this process?
• Measure the temperature of the ice
initially and during the melting
process. What do you observe about

12. AFTER THE MELTING
• How do you think the kinetic energy
of the particles in the ice
influences the melting process?
• How are the interactions between
particles changing as the ice melts?
• What state of matter is the
substance in after the ice has
completely melted?
• Compare the arrangement and motion

13. KINETIC MOLECULAR
THEORY
The kinetic-molecular theory
explains the states of matter and is
based on the idea that matter is
composed of tiny particles that are
always in motion.

14. KINETIC MOLECULAR
THEORY
Molecules Interact through
Attractive Forces
The attractive forces between
molecules are known as the
intermolecular forces.
The stronger the interaction between

15. KINETIC MOLECULAR
THEORY
Molecules Interact through
Attractive Forces
SOLID LIQUI GAS

16. KINETIC MOLECULAR
THEORY
Molecules Interact through
Attractive Forces
SOLID LIQUI GAS

17. KINETIC MOLECULAR
THEORY
Molecules Interact through
Attractive Forces
SOLID LIQUI GAS

18. KINETIC MOLECULAR
THEORY
Molecules Interact through
Attractive Forces
SOLID LIQUI GAS

19. KINETIC MOLECULAR
THEORY
Molecules are in Constant Random
Motion
All molecules are in constant random
motion.
The extent of their motion varies
depending on the temperature and

20. KINETIC MOLECULAR
THEORY
molecules in ice molecules in water molecules in steam

21. KINETIC MOLECULAR
THEORY

22. KINETIC MOLECULAR
THEORY

23. Solids
● Solids, due to their strong
intermolecular forces, have
restricted motion.
● How do you think the
molecules of a solid move?
● They Vibrate. Like a hearing
fork.