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Physics Year 10 > Solids, Liquids And Gases > Flashcards

Solids, Liquids And Gases Flashcards

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1
Q

What state does pressure act equally in if the substance isn’t moving

A

Liquid

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2
Q

How does a substance melt or boil

A

By absorbing heat energy

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3
Q

How does a substance freeze or condense

A

By losing heat energy

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4
Q

When heated what does a substance do

A

Either increases in temperature or changes state but both cannot happen in unisen

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5
Q

What happens to particles as they have higher temperatures

A

They have more energy

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6
Q

Change of state from solid to liquid

A

Melting

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7
Q

Change of state from liquid to gas

A

Evaporating

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8
Q

What is the change of state from gas to liquid

A

Condensing

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9
Q

What is the change of state from liquid to solid

A

Freezing

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10
Q

What is the change of state from solid to gas or gas to solid

A

Sublimation

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11
Q

Formation of particle in a solid

A

Tightly packed, held in a fixed pattern, vibrate from side to side

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12
Q

Formation of particles in a liquid

A

Relatively packed, can slide over eachother

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13
Q

Formation of particles in a gas

A

Very spread out, move in random motion at high speeds

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14
Q

Define specific heat capacity

A

The energy required to change the temp of 1kg of a substance by 1degree C

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15
Q

Why do gas particles have random rapid motion

A

Because they are constantly colliding with eachother

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16
Q

What happens when particle collide with the walls of a container

A

They exert a force on an area and pressure = force/area so they exert a pressure on the walls of a container

17
Q

What is absolute 0 and why is there one

A

Absolute 0 is -273 degrees C or 0 Kelvin. There is one because at that temperature particles have no thermal energy or kinetic energy therefore cannot move or exert a force

18
Q

What happens as you increase the temp of a substance (in terms of particles)

A

The kinetic energy also increases therefore increases the average speed of the particles

19
Q

What is Kelvin temp directly proportional to

A

The average kinetic energy of its particles

20
Q

For a fixed volume what is pressure directly proportional to

A

The temperature

Physics Year 10 (8 decks)

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