Latihan Chp 6

7/29/2019 Latihan Chp 6

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NATURAL MINERALS

1. Group the minerals below into natural elements or natural compounds:

2. Complete the following to identify the elements in a natural compound.

a. Metal oxide = Metal + _________________________

b. Metal carbonate = Metal + ________________ + _______________

c. Metal sulphide = Metal + _________________

d. Silicate = Metal + ________________ + Oxygen

3. Complete the word equations below to show the effects of heat on minerals using thewords given.

a. Copper carbonate _________________+ carbon dioxide

b. Iron sulphide _________________+sulphur dioxide

c. Lead carbonate __________________+ carbon dioxide

Natural elements Natural compounds

Natural Minerals

Calcium carbonate, magnesium sulphide, silver, mercury,Silicon dioxide, platinum, aluminium silicate,

gold

copper oxide iron oxide lead oxide


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Siliconcompoun

Silica

SilicaFlint

Silicate Asbestos

SILICON COMPOUND

1. Name the two types of silicon compound.

2. Name two examples of silica.

3. Name two examples of silicate.

4. The table below shows the properties of silicon compounds.Based on the properties of silicon compounds in the table:

Underline the correct answer to relate the properties of silicon compounds to theirstability.

Silica and silicate are (stable / unstable) compounds.

5. Complete the statements below to explain through examples the uses of siliconcompounds in our daily life using the words given.

a. __________________ is used to make glass object like test tubes.

b. Clay is used to make ___________________ objects such as flower pots.

c. __________________ is used to make watches and prisms.

Insoluble in water

Do not decompose on heating

Do not react with acids

Sand Ceramics Quartz


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CALCIUM COMPOUND

1. Tick (/) the correct elements in calcium carbonate.

[ ] Calcium [ ] Sodium [ ] Carbon [ ] Oxygen [ ] Hydrogen

2. Tick (/) the forms in which calcium carbonate can exists.

[ ] coral reef [ ] marble [ ] eggshell [ ] limestone

3. Tick (/) the correct properties of calcium carbonate.

[ ] Dissolves in water [ ] Reacts with acids

[ ] Does not dissolves in water [ ] Does not reacts with acids

[ ] Not decomposed by heat [ ] Decomposes on heating

4. Complete the word equations below to show the reactions of calcium carbonates.

5. Draw lines to match the calcium compounds with its uses.

Calciumcarbonate

SaltCarbondioxide

Watera.

heatCalciumcarbonate

Carbon dioxideb.

Calcium carbonate(Breaks down when heated toform calcium oxide andcarbon dioxide)

Calcium oxide(Calcium oxide is a base)

Calcium hydroxide(Calcium hydroxide is astrong base)

Calcium hydroxide solution(Reacts readily with carbondioxide)

Treating acid burns

Testing the presence of carbondioxide

Tanning of leather to remove hairfrom hides

Making of whitewash, mortar andplaster

Making quicklime

Making glass and cement

Neutralising acidic soils


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6. Complete the diagram below to describe the formation of calcium oxide and calciumhydroxide using the words given.

NATURAL FUEL RESOURCES

1. Complete the diagram below to list the natural fuel resources.

Natural fuel resource Fossil fuels

2. The diagram below shows the natural processes of petroleum and natural gas.

P Q R

Arrange the formation of petroleum and natural gas in sequence.

Calcium carbonate(Limestone/marble)

Heated Adds a little water

Dissolves in water

(Slaked lime)

(Quicklime)

(Limewater)

Calcium hydroxide Calcium oxide Calcium hydroxide solution

Natural as


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< 30C

40C - 75C

75C - 150C

150C - 230C

>350C

230C - 250C

250C - 300C

300C - 350C

a. Petroleum gas

b.

c. Naphtha

d.

e.

h.

f. Lubricating Oil

g. Fuel Oil

Hotcrude oil

FRACTIONAL DISTILLATION OF PETROLEUM

1. Complete the diagram below with the correct products in a fractional distillation of

petroleum using the words given.

Petrol Kerosene Diesel Bitumen


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Underline the correct answer in the table below to describe the characteristics of thepetroleum products P,Q and R.

Stages Products ColourAmount of soot

produce

P (Gas / Petrol) Colourless No soot

Q Kerosene (slightly yellow / yellow) (less / more)

R Lubricating oil (slightly yellow / yellow) (less / more)

2. Draw lines to match the uses of the various fractions from the fractional distillation ofpetroleum.

Petroleum gas

Fuel for cooking gas

Petrol

Fuel for cars and motorcycles

Naphtha

Raw materials for plastics

Kerosene

Aircraft fuel and lampBitumen

Road surfacing


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Latihan Chp 6