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Chemistry > Kinetic Theory > Flashcards

Kinetic Theory Flashcards

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1
Q

In which state do particles vibrate about a fixed position?

A

Solid

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2
Q

In which state do particles move around each other?

A

Liquid

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3
Q

In which state are the particles fairly close together?

A

Liquid

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4
Q

When are the particles the closest?

A

Solid

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5
Q

What is the process called when a solid changes to a gas?

A

Sublimation

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6
Q

What is the melting point of pure water?

A

0oC

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7
Q

What state is water at 25oC, 300oC and 100oC?

A

Liquid, Water vapour, Boiling

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8
Q

What state is a substance at room temperature if it melts at 15oC and boils at 37oC?

A

Liquid

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9
Q

What is a solution?

A

A type of mixture that is made when one substance dissolves and mixes fully with another

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10
Q

What is the solid that dissolves called?

A

Solute

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11
Q

What is the liquid called that does the dissolving?

A

Solvent

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12
Q

In which state will diffusion occur more quickly and why?

A

Gases, because the particles are moving at a higher speed

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13
Q

What is diffusion?

A

The random movement of particles from an area of high concentration to low concentration

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14
Q

What happens when we increase a material’s temperature?

A

We increase the energy of its particles

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15
Q

When does evaporation take place?

A

When the particles in a liquid escape to form a vapour

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16
Q

Heating curve:

A

Graph to show temperature changes of substance on heating

17
Q

Cooling curve:

A

Graph to show temperature changes of substance in cooling

18
Q

Temperature:

A

The amount of thermal energy that a material possesses

19
Q

Kinetic theory:

A

Describes the arrangement and movement of particles in solids, liquids and gases

20
Q

Expansion:

A

When the particles in a substance spread out

21
Q

Particles diagrams:

A

Diagrams to illustrate the packing of particles in a substance

22
Q

Sublimation:

A

Change of a substance from a solid to a gas

Chemistry (7 decks)

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