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Chemistry Particals > Key Words > Flashcards

Key Words Flashcards

1
Q

What is a Solid

A

Particles are close together, arranged in a regular pattern, they can vibrate in a fixed position, they cannot move from place to place.

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2
Q

What is a liquid

A

Particles are close together, arranged in a random way, they move around each other.

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3
Q

What is a gas

A

Particles are far apart, arranged a random way, they move randomly in all directions.

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4
Q

What is a particle

A

A small unit of matter

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5
Q

What is kinetic

A

Moving energy

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6
Q

What is collision

A

When particles collide together

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7
Q

What is state of matter

A

Identifying if matter is a solid, liquid, gas or aqueous

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8
Q

What is thermal energy

A

Heat energy

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9
Q

What does it mean to vibrate

A

Move back and forth rapidly

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10
Q

What does expansion mean

A

Getting bigger due to the heat, particles space out due to vibrations

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11
Q

What is contraction

A

Particles come closer together

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12
Q

What is evaporation

A

Heating a liquid into a vapour

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13
Q

What is condensation

A

Calling vapour into a liquid

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14
Q

What is melting

A

Heating solid particles into a liquid

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15
Q

What is freezing

A

Cooling liquid particles into a solid

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16
Q

What is change of state

A

When a matter changes from a solid to liquid to gas

17
Q

What is Brownian motion

A

Microscope view of how dust particles behave/move randomly.

18
Q

What Does it mean to compress

A

To bring particles close together

19
Q

What does density mean

A

How closely packed the particles are given in a volume
Density = mass/volume

20
Q

What is dissolving

A

When a substance mixes with a liquid to form a solution

21
Q

What is brownian motion

A

The larger heavier partials eg smoke can be moved with Brownian motion by smaller lighter particles, Eg air travelling at high speeds

Chemistry Particals (3 decks)

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