States of Matter

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What is the name of the change when a liquid becomes a solid?

freezing

What is the state of matter that has no definite shape or size?

gas

What is the state of matter with the weakest force of attraction?

gas

Why does diffusion occur much quicker through gases than through liquids

gases have more energy, and there are more spaces between the particles

What eventually happens to a gas if its pressure is increased?

It condenses

What eventually happens if energy is continually removed from a liquid?

It freezes

Which theory describes the arrangement and movement of particles in solids, liquids and gases?

Kinetic Theory

In which state of matter are the particles mostly touching but arranged in a random way?

Liquid

What is the name of the change when a liquid becomes a gas?

evaporation

Describe how the particles in a liquid move

the particles are held close to each other but they are now free to move.

Describe how the particles in a gas move

the particles move fast in random directions

In which state of matter do the particles have the most energy?

Gas

Which of the following will sublime at room temperature and pressure?

Solid carbon dioxide (dry ice)

What are the three states of matter?

Solids, Liquids & Gases

Why do liquids flow?

The particles are free to move

Why can liquids not be compressed easily?

The particles in a liquid are closely packed and have no space to move into

Why do solids have a fixed shape?

The particles in a solid are fixed in place in a regular arrangement

What is condensing?

When a gas becomes a liquid

What is evaporating?

When a liquid becomes a gas

What is freezing?

When a liquid becomes a solid

What is sublimation?

When a solid turns into a gas

What is melting?

When a solid turns into a liquid

What is the name of the change when a gas becomes a liquid?

condensation

What is the name of the change when a solid becomes a liquid?

melting

What is the state of matter with the strongest force of attraction?

solid

What is the name of the change when a solid becomes a gas?

sublimation

What are the forces of attraction like in a solid?

the forces of attraction are strong, which holds them together

What are the forces of attraction like in a gas?

the forces of attraction are very weak so they are far apart and free to move

What are the forces of attraction like in a liquid?

the forces of attraction are weak, however they still stick closely together

What factors affect how strong the forces are?

the material, the temperature, & the pressure

How are the particles in a solid arranged?

they are fixed in place, this forms a very regular lattice arrangement

Describe how the particles in a solid move

they cannot move from one place to another


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