Important Things

Question 1

What are properties of transition metals

Answer 1

High melting point
Conductors

Question 2

Why is litmus paper bad at showing pH

Answer 2

It only shows IF something is acid or alkali - not HOW acidic or alkali something is

Question 3

Theoretical yield

Answer 3

Calculated yield of product formed
ALL REACTANTS USED
NO LOSS OF ENERGY

Question 4

Define ATOM ECONOMY

Answer 4

The efficiency of a reaction

Question 5

Why is actual yield usually lower than theoretical yield

Answer 5

Not all reactants reacted
Product is lost
Energy lost to surroundings

Question 6

What should we do to electrodes when we weigh them

Answer 6

Clean to remove impurities

Question 7

Why is aluminium extracted with Electrolysis

Answer 7

It is high in the reactivity series
And can’t be extracted by heating with carbon

Question 8

What are disadvantages of Phytoextraction

Answer 8

Slow
Needs lots of land

Question 9

(FOR VERY REACTIVE METALS)
How to obtain a metal from a metal oxide

Answer 9

Electrolysis

Question 10

(FOR LESS REACTIVE METALS THAN CARBON)
How to obtain a metal from a metal oxide

Answer 10

Reduce with carbon

Question 11

How does reduction with carbon work to extract metals

Answer 11

High temperature is applied
Carbon displaced the metal from the metal oxide