Arrangement of ParticlesArrangement of Particles

D. Crowley, 2007D. Crowley, 2007

Arrangement Of ParticlesArrangement Of Particles

To know how particles are arranged in solids, liquids and gases To know how particles are arranged in solids, liquids and gases

Wednesday, April 19, 2023Wednesday, April 19, 2023

ArrangementArrangement

Look at the following substances – can you separate them into 3 different categories…

Look at the following substances – can you separate them into 3 different categories…

ArrangementArrangement

One way to separate the following would be into gases, liquids and solids…

One way to separate the following would be into gases, liquids and solids…

Solid Solid Gas Liquid

Liquid Solid Gas Gas

Liquid

ParticlesParticles

What is a particle? What is the particle theory?

Brainstorm with your partner what you think a particle is…

The particle theory says that all things are made of tiny pieces, called particles

Solids, liquids and gasses all have different arrangements of these particles, giving them their special properties…

All materials are made up of particles

What is a particle? What is the particle theory?

Brainstorm with your partner what you think a particle is…

The particle theory says that all things are made of tiny pieces, called particles

Solids, liquids and gasses all have different arrangements of these particles, giving them their special properties…

All materials are made up of particles

Solids, Liquids & GasesSolids, Liquids & Gases Solids, liquids and gases are the three states of matter Their particles are arranged differently, giving them their special properties… Do you know how these particles are arranged?

Solids, liquids and gases are the three states of matter Their particles are arranged differently, giving them their special properties… Do you know how these particles are arranged?

Solids Liquids Gases

Solids, Liquids & GasesSolids, Liquids & Gases Solids, liquids and gases are the three states of matter Their particles are arranged differently, giving them their special properties… Do you know how these particles are arranged?

Solids, liquids and gases are the three states of matter Their particles are arranged differently, giving them their special properties… Do you know how these particles are arranged?

Solids Liquids Gases

SolidsSolids What examples are there of solids? What can we say about the particles in a solid?

The particles are very close together The particles are arranged in a regular pattern The particles cannot move from place to place, but the particles can vibrate in a fixed

position Solids are held together by strong forces called bonds Solids have a fixed shape, e.g. wood, plastic, steel, ice (solid water)

What examples are there of solids? What can we say about the particles in a solid?

The particles are very close together The particles are arranged in a regular pattern The particles cannot move from place to place, but the particles can vibrate in a fixed

position Solids are held together by strong forces called bonds Solids have a fixed shape, e.g. wood, plastic, steel, ice (solid water)

Why do solids have a fixed shape? Why can solids not be compressed (squashed)?

Solids have a fixed shape because the particles cannot move from place to place

Solids cannot be compressed because the particles are very close together, and have no space to move into

LiquidsLiquids What examples are there of liquids? What can we say about the particles in a liquid?

The particles are close together The particles are arranged in a random way The particles can move around each other - the bonds in a liquid are strong

enough to keep the particles together, but weak enough to let them move around Liquids flow, and can change shape, e.g. water, lemonade, mercury, (all liquids at

room temp.)

What examples are there of liquids? What can we say about the particles in a liquid?

The particles are close together The particles are arranged in a random way The particles can move around each other - the bonds in a liquid are strong

enough to keep the particles together, but weak enough to let them move around Liquids flow, and can change shape, e.g. water, lemonade, mercury, (all liquids at

room temp.)

Why do liquids flow, and take the shape of their container? Why can liquids not be compressed (squashed)?

Liquids can change shape because the particles can move around each other

Liquids cannot be compressed because the particles are close together, and have no space to move into

GasesGases What examples are there of gases? What can we say about the particles in a gas?

The particles are far apart The particles are arranged in a random way The particles can move quickly, in all directions - there are no bonds between

the particles in a gas Gases flow, and completely fill their container, e.g. air, helium, chlorine (gas at

room temp.)

What examples are there of gases? What can we say about the particles in a gas?

The particles are far apart The particles are arranged in a random way The particles can move quickly, in all directions - there are no bonds between

the particles in a gas Gases flow, and completely fill their container, e.g. air, helium, chlorine (gas at

room temp.)

Why do gases flow, and completely fill their container? Why can gases be compressed (squashed)?

Gases can move quickly in all directions, filling their container

Gases can be compressed because the particles are far apart, and have space to move into

PropertiesProperties

You need to draw out the particle theory boxes of a solid, liquid and gas. The you need to copy out, and fill in the table below…

You need to draw out the particle theory boxes of a solid, liquid and gas. The you need to copy out, and fill in the table below…

Solids Liquids Gases

State Solid Liquid Gas

Arrangement of particles

Movement of particles

Close togetherRegular pattern

Close togetherRandom

Far apartRandom

Vibrate on the spot

Move around each other

Move quickly in all directions

Compression (Squashing)Compression (Squashing) Look at the demonstration of compression in a solid, liquid and gas Which of the syringes will we be able to compress, the syringe with the sand in,

the water in, or the air in? Why do you think some will compress, and other will not?

Look at the demonstration of compression in a solid, liquid and gas Which of the syringes will we be able to compress, the syringe with the sand in,

the water in, or the air in? Why do you think some will compress, and other will not?

Why is it the gas would compress, but the solid and liquid did not?! Draw out this experiment, labeling the three syringes with the solid, liquid and

gas in, and using your scientific knowledge of particles explain why only the gas compressed

Why is it the gas would compress, but the solid and liquid did not?! Draw out this experiment, labeling the three syringes with the solid, liquid and

gas in, and using your scientific knowledge of particles explain why only the gas compressed

Solid -no compression

Liquid -no compression

Gas -compression