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Nat 5 chemistry - A.Clarke > Unit 3 COPY > Flashcards

Unit 3 COPY Flashcards

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1
Q

Name some properties and bonding of metals

A 
Conductor of electricity/ heat
Shiny
Wide range of MPt's 
Strong
Beaten into shape
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2
Q

Describe metallic bonding

A

Metals packed closely together and electrons in the outer shell move from atom to atom

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3
Q

What are delocalised electrons

A

Positive ions held together by the attractive force

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4
Q

.Why do metals conduct electricity in the solid state?

A

The electrons are free to move

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5
Q

What is an alloy?

A

A mixture of metals, combines useful properties in a single substance

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6
Q

metal+water

A

metal hydroxide & hydrogen gas

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7
Q

Metal dilute acid

A

Metal salt+ hydrogen gas

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8
Q

Metal+oxygen

A

Metal oxide

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9
Q

Metals which react with water and dilute acid

A

High up in the reactivity series

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10
Q

Metals which react with dilute acid but not water

A

middle in series

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11
Q

Metals which don’t react with water or dilute acid

A

Low in series

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12
Q

What is a redox reaction?

A

When elcetrons flow from the metal high in the elctrochemical series to metal lower

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13
Q

What is the name when atoms lose electrons?

A

Oxidised

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14
Q

What is the name when atoms gain electrons?

A

Reduced

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15
Q

Why is an ion bridge needed?

A

Ensure the solution are always electrically neutral by allowing ions to move between the solutions

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16
Q

heating with electrolysis

A

High up

17
Q

Heat with carbon

A

middle

18
Q

Heat alone

A

low

19
Q

Where does reduction take place

A

cathode

20
Q

Where does oxidation take place

A

anode

21
Q

What is a type of polymerisation called when you add monomers together?

A

addition polymerization

22
Q

Describe addition polymers

A

continuous chains of carbons

23
Q

What do all monomers hace

A

a carbon to carbon double bond

24
Q

What happens to the double bond when you add monomers together

A

double bond is broken

25
Q

What are monomers?

A

Small molecules that are unsaturated which undergo polymerisation reaction to make polymers

26
Q

What is a polymer?

A

Substance made from large molecules made up of repeated units (monomers)

27
Q

What is all made at the reduction side

A

A solid

28
Q

what is formed in an oxidation reaction?

A

An ion

29
Q

What is formed in a reduction reaction?

A

from atoms of elements

Nat 5 chemistry - A.Clarke (11 decks)

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