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
