Pages in this set

Page 1

Preview of page 1
C1A
1.1 Atoms, elements and compounds

COMPOUND- a substance made of two or more types of atom chemically joined together
ELEMENT- a substance made of only one type of atom
MIXTURE- a combination of two or more elements in a way that allows each element to keep its own chemical…

Page 2

Preview of page 2
mortar holds building materials together, the lime in the mortar reacts with the carbon dioxide in the air, producing calcium carbonate,
this means that the building materials are effectively held together by stone, making the construction very strong.
slaked lime + carbon dioxide => Calcium carbonate + water
the amount…

Page 3

Preview of page 3
2)At the high temp blast furnace=> the co2 reacts again with coke = carbon monoxide
CO2+C=>2CO
3) Carbon monoxide reacts with iron oxide, removing oxygen, reducing it to molten iron, which flows to the bottom of the blast
furnace
Fe2O3 + 3CO => 2Fe + 3CO2
a) Some is left…

Page 4

Preview of page 4
hard, tough, strong but malleable.
all have very high melting points, apart from mercury
These properties= many uses: buildings, cars, trains, transport.
strength=useful as construction metals.
good conductors= heating and electrical wiring.
Example of transition metal- Copper. not particularly strong bent/shaped easily. conducts heat/electricity well doesn't react with
water. ideal…

Page 5

Preview of page 5
1)Complexing agents increase uptake of crop.
2)Crops grow on soil containing metal concentration
3)Plant material is burned, possible production of electricity.
4)Small volume of plant ash (bio-ore) high amount of metal
5)Smelt bio-ore to yield metal.
Recycling Fridges ­ Recycling is easier than extracting metals. It is not always easy…

Page 6

Preview of page 6
OR CH + 5O 3CO + 4HO
Notice how we need 5 molecules of oxygen for the propane to burn. This creates 3 molecules of Carbon Dioxide and 4 molecules of water.
The equation is therefore BALANCED!!!
As well as hydrocarbons all fossil fuels, (coal, oil and natural gas), contain…

Page 7

Preview of page 7
Plant fuels- Fossil fuels used to produce electricity and drive our cars have big disadvantages: production of CO and other pollutants.
They are also non-renewable; once they run out we can't replace them. Plants could be one answer to this problem

Plants that make sugar can be used to produce…

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »