Chemistry

FORM 4

CHAPTER 2: THE STRUCTURE OF THE ATOM

- CHANGES IN STATE OF MATTER -

LEARNING OUTCOMESLEARNING OUTCOMES

By the end of this chapter, student should able to:

1. Relate the change in state of matter to the change in heat.

2. Relate the change in heat to the change in kinetic energy of particles.

3. Explain the inter-conversion of the state of matter in term of kinetic theory of matter.

CONTENTSCONTENTS CHANGES IN THE STATE CHANGES IN THE STATE

OF MATTEROF MATTER

QUIZQUIZ

HEATING AND HEATING AND COOLING GRAFCOOLING GRAF

MELTING BOILING

FREEZING CONDENSATION

SUBLIMATION

MATTER

SUBLIMATION

CHANGES IN THE STATE OF MATTERCHANGES IN THE STATE OF MATTER

SOLID LIQUID GAS

KINETIC THEORY OF MATTER

• The higher the temperature, the higher the kinetic energy of the particles.

Kinetic energy of particles increases (HEATING)

Kinetic energy of particles decreases (COOLING)

Heat energy is absorbed

Heat energy is released

HEATING AND COOLING

CHANGING STATE

CHANGE IN THE STATE OF MATTER

PERUBAHAN KEADAAN JIRIM

HEATING COOLING

TIME(min)

TEMPERATURE (°C)

STATE TIME(min)

TEMPERATURE (°C)

STATE

0 0

0.5

GRAF PEMANASAN(Heating Graph)

GRAF PENYEJUKAN(Cooling Graph)

1 2

Content Page

TUTORIALChoose the number of

questions below

Good Luck!

Last Page

1. Refer to the above figure, what is the process involved in transforming figure A to Figure B.

A. Sublimation

B. Condensation

C. Melting

D. Freezing

Figure BFigure A

2. Figure shows the cooling graph of liquid naphthalene. Which of the following shows the physical states at X and Y?

X Y

A Solid Liquid

B Gas Solid

C Liquid Gas

D Liquid Solid

Y

X

FALSETry again…

1 2

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