7. Which one of these IS an advantage of Limestone?
Neutrilises acid soils
it can cause global warming
To get at the limestone guarries are built
it can cause acid rain
8. Which one can polymerisation be used on?
Alkene
Alkane
9. Which one of these is NOT an advantage of Limestone?
Dissolves in acid rain
used in bread
Cosmetic uses
used to make concreate, bricks, cements, and buildings
10. What is a crude oil?
Oils extracted from animals
A mixture of hydrocarbons (a substance containing only hydrogen and carbon atoms)
Oils extracted from leaves
11. How do you turn calcium hydroxide solution into calcium carbonate? Make sure the symbol equation is correct.
Add Carbon dioxide (( Ca(OH)2 + CO2 ---> CaCO3 ))
Add Carbon dioxide (( 2Ca(OH)2 + CO2 ---> 2CaCO3 ))
12. Here is a method used to make ethanol. "Enzymes in yeast break down the sugar into ethanol and carbon dioxide gas". What method is this?
Fermentation
Ethane Gas
Thermal decomp
Electrolysis
13. What will unsaturated oils do to bromine/iodine water?
Decolourside to an orange
Absorb the other substances
React to create a spark of orange light
Nothing
14. "Bacteria feeds on the ore and this produces waste containing copper ions. Electrolysis or displacement will then produce a pure copper." What method is this?
Smelting
Copper Sulphate
Bioleaching
Phytomining
15. "First heat the copper ore strongly in a furnace with air. Copper Sulphate + Oxygen ---> Copper + Sulphur Dioxide. Then use electrolysis to purify the copper". What method is this?
Bioleaching
Smelting
Phytomining
Copper Sulphate
16. What part of the emulsifier is attracted to oil?
Tail
Body
Head
No part of the emulsifier
17. Which of these is an ADVANTAGE for fermentation?
Toxic at high percentages
May need to be distilled
Quick as the yeast needs to be left in a warm place and then its done
Cant go past 15% alcohol
18. What properties DOES the iron have after being in the furnace
Hard and Brittle
Hard and Easly shaped
Extremely Soft and Easly shaped
Solid and Cold
19. Which of these is NOT a property of an Alkane?
