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!C1 - C3 > C2.3.2 - Changing State > Flashcards

C2.3.2 - Changing State Flashcards

1
Q

What happens to the forces of attraction whenever something boils or melts?

A

They are overcome, and some or all of the bonds between its particles break

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2
Q

What could happen when a substance melts or boils?

A

It could become a liquid, or become a gas

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3
Q

What is the process of a solid turning into a liquid?

A

Melting

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4
Q

What is the process of a solid becoming a gas?

A

Sublimination

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5
Q

If the bonds in a substance are strong, will it take more or less energy to break them?

A

More

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6
Q

Give examples of the forces that could break.

A

Intermolecular
Covalent
Ionic
Metallic

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7
Q

What do you know about a substance if its melting point is high?

A

It has got a lot of strong bonds

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8
Q

What do you know about a substance that has a low melting point?

A

It doesn’t have many strong covalent bonds

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9
Q

What is transferred to the surroundings by heat when chemical bonds are formed?

A

Chemical stored energy

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10
Q

What happens to the bonds inside a substance when it condenses / freezes?

A

The bonds form again

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11
Q

What is the process of liquid turning into a solid?

A

Freezing

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12
Q

What is the process of a gas turning into a liquid?

A

Condensation

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13
Q

What are the bonds involved in the state changes of metals?

A

Metallic bonds

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14
Q

What is the relative strength of metallic bonds?

A

Strong

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15
Q

What are examples of metals?

A

Iron, Mercury

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16
Q

What are the bonds involved in state changes in an ionic structure?

A

Ionic bonds

17
Q

What is the relative strength of ionic bonds?

A

Strong

18
Q

What is an example of an ionic compound?

A

Sodium chloride

19
Q

What are the bonds involved in state changes in giant covalent structures?

A

Covalent bonds

20
Q

What is the relative strength for covalent bonds?

A

Strong

21
Q

What are examples of giant covalent structures?

A

Diamond, silica

22
Q

What are the bonds involved in state changes in simple molecules?

A

Intermolecular forces

23
Q

What is the relative strength intermolecular forces?

A

Weak

24
Q

What are examples of simple molecules?

A

Oxygen, water and wax

25
Q

What state are simple molecules usually in at room temperature?

A

Usually liquid or gas, but can also be a solid but easily melted

26
Q

What is the opposition fo sublimination called?

A

Deposition

!C1 - C3 (45 decks)

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