1. Answer Sedimentary Metamorphic Igneous
1) Name the three types of rock.
Answer
Sedimentary
Metamorphic
Igneous

2. Answer Limestone Chalk Sandstone
2) Name two examples of sedimentary rocks. (2)
Answer
Limestone
Chalk
Sandstone

3. easily broken away by wind, rain and waves
3) Describe some features of sedimentary rocks (2)
Answer
Contain fossils
are layered
easily broken away by wind, rain and waves

4. Formed from layers of sediments (silt, animals, plants).
4) Describe how sedimentary rocks are formed? (4)
Answer.
Formed from layers of sediments (silt, animals, plants).
Over millions of years pressure from layers above,
squeezes out the water and compresses them.
Finally cemented together

5. Formed by action of heat and pressure.
5) How are metamorphic rocks formed? (3)
Answer.
Formed by action of heat
and pressure.
Formed from sedimentary rocks (or igneous).

6. Answer Marble formed from, Limestone or chalk
6) Give an example of metamorphic rock and what is formed from.
Answer
Marble formed from,
Limestone or chalk

7. Answer Extrusive eg; basalt Intrusive eg; Granite
7) Name the two types of igneous rocks giving examples. (2)
Answer
Extrusive eg; basalt
Intrusive eg; Granite

8. Intrusive rock: Contain large crystals
8) Describe the difference between in appearance between extrusive and intrusive igneous rocks.
Intrusive rock: Contain large crystals
Extrusive rocks: Contain small crystals

9. 9) Describe how extrusive igneous rocks are formed (2).
Molten magma pushes out of crust, cools quickly, above ground, forming small crystals

10. 10) Describe how intrusive igneous rocks are formed (2).
a) Molten magma pushes up into the crust, cools slowly underground forming big crystals

11. 11) Give some uses of limestone (3)
Answer
Building material, bricks, cement and concrete
Making glass
Neutralising of acidic soil and rivers due to acid rain

12. Limestone heated in a kiln with powdered clay
12) Describe how cement is made (2).
Answer
Limestone heated in a kiln with powdered clay .

13. Mix cement with sand, water and gravel
13) How is concrete made ?
Answer
Mix cement with sand, water and gravel

14. Heat, sand and sodium carbonate until it melts.
14) How is glass made?
Answer
Heat, sand and sodium carbonate until it melts.

15. 15) Describe some of the problems with quarrying limestone. (4)
Answer
Makes ugly holes permanently effecting the scenery.
Noise pollution from explosions and transporting limestone.
Destroys habitats.
Dust pollution explosion pollution from.

16. 16) Give some advantages of quarrying limestone. (3)
Answer
Provides products like houses, roads, paints and medicine.
Used to neutralise acidic soil and water ways.
Used in power station chimneys to neutralise acidic gases (SO2 which causes acid rain).
Brings money, jobs and local improvements (e.g roads) into the local environment.

17. 17) What is the name of the chemical that limestone is made from (2).
Answer
Calcium carbonate .

18. 18) What is the chemical formula of calcium carbonate?
Answer
CaCO3 .

19. Calcium Oxide + Carbon dioxide
19) When calcium carbonate is heated it is thermally decomposed into what two products. (2)
Calcium Oxide + Carbon dioxide

20. Calcium Carbonate ---Calcium Oxide + CO2
20) What is the word equation for the thermal decomposition calcium carbonate? (2)
Answer
Calcium Carbonate ---Calcium Oxide + CO2

21. Answer CaCO3 ----- CaO + CO2
21) What is the balanced equation for the thermal decomposition calcium carbonate? (2)
Answer
CaCO  CaO + CO2

22. 22) What are the balanced symbol equation for the thermal decomposition of
Copper Carbonate
Zinc Carbonate
Answer
CuCO  CuO + CO2
ZnCO  ZnO + CO2

23. 23) How is thermal stability of different metal carbonates determined
Answer (any of the three following point)
Heat the carbonate in a boiling tube,
Pipe off the gas given off (CO2) into limewater.
The CO2 will turn the limewater milky.
Least stable carbonate will decompose faster and the lime water will turn milky more quickly.

24. Add water to calcium oxide
24) How is Calcium hydroxide formed?
Answer
Add water to calcium oxide

25. Dissolve calcium hydroxide (solid) in water.
25) How is Limewater produced from calcium hydroxide?
Answer
Dissolve calcium hydroxide (solid) in water.

26. 26) What is the conservation of mass?
Answer
A reaction conducted in a sealed tube, the total mass before and after the reaction do not change.

27. Answer HCl H2SO4 HNO3 27) What is the formula for the following acids
Hydrochloric acid
Sulphuric acid
Nitric Acid
Answer
HCl
H2SO4
HNO3