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Flashcards in Unit 3 Deck (29)
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1

Name some properties and bonding of metals

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

2

Describe metallic bonding

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

3

What are delocalised electrons

Positive ions held together by the attractive force

4

.Why do metals conduct electricity in the solid state?

The electrons are free to move

5

What is an alloy?

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

6

metal+water

metal hydroxide & hydrogen gas

7

Metal dilute acid

Metal salt+ hydrogen gas

8

Metal+oxygen

Metal oxide

9

Metals which react with water and dilute acid

High up in the reactivity series

10

Metals which react with dilute acid but not water

middle in series

11

Metals which don't react with water or dilute acid

Low in series

12

What is a redox reaction?

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

13

What is the name when atoms lose electrons?

Oxidised

14

What is the name when atoms gain electrons?

Reduced

15

Why is an ion bridge needed?

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

16

heating with electrolysis

High up

17

Heat with carbon

middle

18

Heat alone

low

19

Where does reduction take place

cathode

20

Where does oxidation take place

anode

21

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

addition polymerization

22

Describe addition polymers

continuous chains of carbons

23

What do all monomers hace

a carbon to carbon double bond

24

What happens to the double bond when you add monomers together

double bond is broken

25

What are monomers?

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

26

What is a polymer?

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

27

What is all made at the reduction side

A solid

28

what is formed in an oxidation reaction?

An ion

29

What is formed in a reduction reaction?

from atoms of elements