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Thirds MASTER > C1.1 Particles and their Behaviour > Flashcards

C1.1 Particles and their Behaviour Flashcards

1
Q

What is a mixture?

A

A material whose properties are not the same all the way through. It is more than one substance not chemcially reacted together.

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2
Q

What is a substance?

A

A material that is not a mixture. It has the same properties all the way through.

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3
Q

What are the three states of matter?

A

Solid, Liquid and Gas

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4
Q

How are particles in solids arranged?

A

In a regular fixed pattern with no gaps between particles

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5
Q

How are particles in liquids arranged?

A

Close together but in an irregular pattern with no gaps between particles

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6
Q

How are particles in gases arranged?

A

They and far apart

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7
Q

Can solids be compressed?

A

No

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8
Q

Can liquids be compressed?

A

No

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9
Q

Can gases be compressed?

A

Yes

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10
Q

Do solids flow?

A

No

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11
Q

Do liquids flow?

A

Yes

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12
Q

Do gases flow?

A

Yes

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13
Q

What is the motion of solid particles?

A

Vibrate around a fixed point

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14
Q

What is the motion of liquid particles?

A

Move over each other

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15
Q

What is the motion of gas particles?

A

Move randomly in all directions

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16
Q

What is meant by boiling?

A

When a liquid turns into a gas

17
Q

What is meant by condensing?

A

When a gas turns into a liquid

18
Q

What is meant by freezing?

A

When a liquid turns into a solid

19
Q

What is meant by melting?

A

When a solid turns into a liquid

20
Q

If a unknown substance has a sharp melting point - is it pure or a mixture?

A

It is a pure substance

21
Q

What is sublimation?

A

When a solid turns into a gas

22
Q

What is evaporation?

A

When surface particles in a liquid. The temperature does not need to be above the boiling point.

23
Q

State three ways to increase the rate of evaporation

A

Increase the temperature, increase the surface area of the material and increase the amount of wind (air flow)

24
Q

What happens to your temperature as evaporation takes place?

A

Temperature reduces - you cool down

Thirds MASTER (2 decks)

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