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C1 topic 2: States of matter and mixtures > States of matter > Flashcards

States of matter Flashcards

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1
Q

Describe how particles are arranged in solids

A

in rows and columns, all touching

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2
Q

Describe how particles move in solids

A

Vibrate in fixed positions

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3
Q

Describe how particles are arranged in liquids

A

randomly, all touching

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4
Q

Describe how particles move in liquids

A

randomly swapping places

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5
Q

Describe how particles are arranged in gases

A

far apart, not touching

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6
Q

Describe how particles move in gases

A

randomly, in any direction

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7
Q

What happens to movement of particles as temperature increases?

A

Speed increases

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8
Q

Which change of state takes place during melting

A

Solid -> liquid

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9
Q

Which change of state takes place during freezing?

A

liquid -> solid

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10
Q

Which change of state takes place during evaporation?

A

liquid -> gas

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11
Q

Which change of state takes place during condensation?

A

gas -> liquid

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12
Q

which change of state takes place during sublimation?

A

solid -> gas with no liquid state. (Or gas -> solid with no liquid state)

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13
Q

What is a physical change?

A

A change where nothing new is made. e.g. change of state. Physical changes are easy to reverse.

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14
Q

What is a chemical change?

A

A change where something new is made e.g. burning. chemical changes are difficult to reverse.

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15
Q

A substance is heated and the temperature measured.What happens to the temperature whilst the substance is changing state?

A

The temperature stays the same

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16
Q

A substance is heated and the temperature measured.Why does the temperature stay the same whilst it changes state?

A

Because the energy is being used to break bonds between particles

17
Q

What is a boiling point?

A

The temperature where a substance transforms from a liquid to a gas (or a gas to a liquid)

18
Q

What is a melting point?

A

The temperature where a substance transforms from a solid to a liquid (or a liquid to a solid)

19
Q

A substance has a melting point of -23oC and a boiling point of 87oC. What state is it at room temperature (20oC)

A

Liquid

20
Q

A substance has a boiling point of 1500oC and a melting point of 857oC. What state is it at room temperature (20oC)

A

solid

C1 topic 2: States of matter and mixtures (2 decks)

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