Unit 3 COPY Flashcards
Name some properties and bonding of metals
Conductor of electricity/ heat Shiny Wide range of MPt's Strong Beaten into shape
Describe metallic bonding
Metals packed closely together and electrons in the outer shell move from atom to atom
What are delocalised electrons
Positive ions held together by the attractive force
.Why do metals conduct electricity in the solid state?
The electrons are free to move
What is an alloy?
A mixture of metals, combines useful properties in a single substance
metal+water
metal hydroxide & hydrogen gas
Metal dilute acid
Metal salt+ hydrogen gas
Metal+oxygen
Metal oxide
Metals which react with water and dilute acid
High up in the reactivity series
Metals which react with dilute acid but not water
middle in series
Metals which don’t react with water or dilute acid
Low in series
What is a redox reaction?
When elcetrons flow from the metal high in the elctrochemical series to metal lower
What is the name when atoms lose electrons?
Oxidised
What is the name when atoms gain electrons?
Reduced
Why is an ion bridge needed?
Ensure the solution are always electrically neutral by allowing ions to move between the solutions
heating with electrolysis
High up
Heat with carbon
middle
Heat alone
low
Where does reduction take place
cathode
Where does oxidation take place
anode
What is a type of polymerisation called when you add monomers together?
addition polymerization
Describe addition polymers
continuous chains of carbons
What do all monomers hace
a carbon to carbon double bond
What happens to the double bond when you add monomers together
double bond is broken
What are monomers?
Small molecules that are unsaturated which undergo polymerisation reaction to make polymers
What is a polymer?
Substance made from large molecules made up of repeated units (monomers)
What is all made at the reduction side
A solid
what is formed in an oxidation reaction?
An ion
What is formed in a reduction reaction?
from atoms of elements
