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Chemistry > T3 YR10 - Structure and bonding > Flashcards

T3 YR10 - Structure and bonding Flashcards

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1
Q

Define a compound?

A

Substance made up of 2 or more different atoms that are chemically bonded

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2
Q

How does ionic bonding work?

A

When electrons exchange to ensure full outer shells

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3
Q

How does covalent bonding work?

A

Sharing electrons given no charge is present with ions

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4
Q

Name the 5 complex ions?

A

Carbonate, sulfate, nitrate, hydroxide, ammonium

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5
Q

How are ionic compounds formed?

A

When metals react with non metals

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6
Q

In covalent bonding, do elements exchange electrons?

A

No, they share electrons in a COVALENT BOND

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7
Q

Is ionic bonding weak or strong?

A

Very strong

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8
Q

What are ionic bonds?

A

Strong electrostatic forces of attraction

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9
Q

What are typical melting points of ionic substances?

A

Very high, harder to break down due to strong bonds

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10
Q

Do ionic substances conduct electricity?

A

Ions cannot move due to it being an ionic solid

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11
Q

Define ionic aqueous?

A

Freely moving ions

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12
Q

Define simple molecule?

A

Two or more small atoms joined together

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13
Q

What are intermolecular forces?

A

Attractions between separate molecules

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14
Q

Why can’t simple molecules conduct electricity?

A

Not in distilled water so they are not pure minerals

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15
Q

Can graphite or diamond conduct electricity?

A

Graphite given the extra electron on the outer shell

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16
Q

What do delocalised electrons do?

A

In graphite, they move freely along layers whilst in diamond they drift away from terminal energy

17
Q

Give 2 examples of giant covalent?

A

Graphite, magnesium oxide

18
Q

What is a metallic bond?

A

The force of attraction between metal ions and delocalised electrons

19
Q

What is an alloy?

A

Mixture of metals designed to change their properties

20
Q

What is harder a metal or a metal alloy?

A

Alloy given the layers are locked together

Chemistry (8 decks)

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