L7 - Solid, Liquid, Gas

• Chemistry
• Secondary Education

Lesson 1 - What is IGCSE Chemistry?

4

9

Lesson 7 - Solids, Liquids, Gases

Today, I'm going to...

• know about the three states of matter,
• be able to describe the physical properties of solids, liquids, and gases, and
• understand why liquids and gases are fluids.

Lesson 7 - Solids, Liquids, Gases

• I can describe the particle separation, arrangement, and motion of the three states of matter.
• I can draw the particles of the three states of matter using circles as particles.
• I can describe the effect of temperature (increase or decrease) on a gas volume.
• I can describe the effect of pressure (increase or decrease) on a gas volume.

I am successful if...

• Prepare your blue or black pen.
• Open your Workbook on page 2.
• Complete Focus 1.
• You only have 3 minutes to complete your answers.

Workbook Exercise

States of Matter

Property	SOLID	LIQUID	GAS
Shape
Hardness
Volume
Density
Viscosity
Colour

• fixed

• changes to that of its container

• NO

• can be soft or hard

• NO

• NO

• fixed

• fixed

• not fixed

• high

• less dense than solids

• very low

• NO

• viscous

• flows easily

• Yes

• Yes

• Yes

Kinetic Particle Theory

Kinetic Particle Theory

Kinetic energy

Kinetic Particle Theory

Kinetic energy

Motion 

Kinetic Particle Theory

Kinetic energy

Motion 

Arrangement

Kinetic Particle Theory

Kinetic energy

Motion 

Arrangement

Separation

Kinetic Particle Theory

Kinetic energy

Motion 

Arrangement

Forces

Separation

Interpretation

KPT	SOLID	LIQUID	GAS
Kinetic energy of particles
Motion of particles
Arrangement of particles
Separation of particles
Forces between particles

phet.colorado.edu

Interpretation

KPT	SOLID	LIQUID	GAS
Kinetic energy of particles
Motion of particles
Arrangement of particles
Separation of particles
Forces between particles

• What will happen to the particles of a solid when you heat them?
• Does the volume of a gas decrease if you decrease the temperature?

Temperature

• Do the particles of gas collide more with each other and with the container when the volume decreases?
• What will happen to the volume of gas if you decrease the pressure?

Pressure

phet.colorado.edu

• Prepare your blue or black pen.
• Open your Workbook on page 3.
• Complete Focus 2 and 3.
• You only have 5 minutes to complete your responses.

Workbook Exercise

• I can describe the particle separation, arrangement, and motion of the three states of matter.
• I can draw the particles of the three states of matter using circles as particles.
• I can describe the effect of temperature (increase or decrease) on a gas volume.
• I can describe the effect of pressure (increase or decrease) on a gas volume.

I am successful if...

Self-check

• Open your notebook.
• Look for this.
• Read.
• Reflect.
• Complete.

Name something you did not know before this lesson, 

but NOW you do!