st. joseph’s anglo-chinese school first term … f3 is 1st...st. joseph’s anglo-chinese school...

2014-2015 First Term Examination/ F.3 Integrated Science / Question Paper / LAM 1 / 9

St. Joseph’s Anglo-Chinese School

First Term Examination 2014-2015

F.3 Integrated Science

Name : Total Pages : 9 pages

Class : Class No.: Total Marks : 100 marks

Date : 9th January, 2015 Time Allowed : 1 hr 15 mins

INSTRUCTIONS：

1. After the announcement of the start of the examination, you should first write your Name,

Class and Class No. in the spaces provided.

2. Write your answers in the spaces provided in this Question-Answer Paper.

3. This paper consists of FOUR sections. Section A, B, C and D. Attempt ALL questions.

4. The diagrams in this paper are NOT necessarily drawn to scale.

INSTRUCTIONS (MULTIPLE-CHOICE QUESTIONS)：

1. All questions carry equal marks.

2. Answer ALL questions. You are advised to use an HB pencil to mark all the answers on the

Answer Sheet, so that wrong marks can be completely erased with a clean rubber. You must

mark the answers clearly; otherwise you will lose marks if the answers cannot be captured.

3. You should mark only ONE answer for each question. If you mark more than one answer,

you will receive NO MARKS for that question.

4. No marks will be deducted for wrong answers.


Section A : True and False Questions (10 marks, 1 mark each)

1. The shape of a piece of metal cannot be changed unless the metal melts.

2. All metals are solids at room temperature.

3. Physical methods of extraction are suitable for metals that form compounds with other substances easily.

4. All molecules are made up of atoms of different kinds.

5. Fractional distillation of crude oil needs a lot of energy.

6. Most water pipes are made of plastics because plastics are light.

7. Only one type of material can be used to reinforce plastics.

8. Carrots and fresh green vegetables are rich in vitamin A.

9. Drinking fluid is the only way for our body to get water.

10. Intake of soluble fibre reduces the risks of stroke and diabetes.

Section B : Fill in the blanks (25 marks, 1 mark each) 1. (a) is used to make electrical wires because it is good conductors of electricity . 2. Metals can be hit or pressed into sheets without breaking are called (b) , and they can be pulled into wires

are called (c) . 3. The two main factors affecting the decision in choosing suitable metals for particular uses are their (d) and

(e). 4. Aluminium is the most (f) metal in the Earth’s (g) and iron is the second.

5. Many metal objects, such as BBQ forks and cookie containers can be (h) in order to save the resource of the

Earth.

6. Copper, aluminium and iron are examples of (i).

7. A (j) is a substance consisting of atoms of two or more elements.

8. A substance that is made up of only one kind of atom is called an (k).

9. Metal waste not only spoils the (l), but also affect public health.

10. If the sewage from dyeing factories discharged directly into the rivers, it causes water (m).

11. Some metals can be extracted from their oxides by heating the oxides with carbon. This process of extracting

metals is called carbon (n).

12. To test whether a sample contains chloride ions, first dissolve the sample in water, then add excess dilute (o),

followed by (p) solution. A white precipitate shows that the sample has chloride ions.

13. Certain kinds of metal ions can produce brightly coloured flames when they are burnt in a Bunsen flame.

This is a process called (q) test.

14. An (r) is an atom or a group of atom in which the total number of proton is not equal to the total number of

electron, giving it a net positive or negative charge.


15. To test whether a sample contains carbonate ions, add dilute hydrochloric acid to the sample. If the sample

has carbonate ions, (s) will be given off. 16. A (t) is the smallest stable unit of some elements or compounds. It is a small group of atoms joined

together.

17. Composite materials consist of two main parts : the (u) and the reinforcing material. 18. (v) are the main energy source of the body. 19. (w) are used for growth and repair of body tissues. 20. (x), (y) and dietary fibre contain no energy value but important for keeping us healthy.

Section C : Multiple Choice Questions (20 marks, 1 mark each)

1. Which of the following metals is a liquid at room temperature?

A. Calcium

B. Copper

C. Mercury

D. Zinc

2. Which of the following properties should the metal used to make rails possess?

(1) Strong

(2) Highly ductile

(3) Resistant to corrosion

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

3. Which of the following substances is a molecule?

A. Carbon

B. Oxygen

C. Gold

D. Sodium nitrate

4. To find out if a substance is a metal, which of the following tests is the most reliable?

A. Check if the substance is solid or not.

B. Check if the substance is shiny without polish.

C. Test if the solid melts easily.

D. Test if the solid conducts current.


5. Which of the following are the common properties of metals?

(1) They have high densities.

(2) They are ductile.

(3) They have high melting points

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

6. The experiment below shows the reaction between copper oxide and carbon. When the gas released from

test tube X passes through substance A, it changed to milky.

What is substance A?

A. Hydrogencarbonate indicator.

B. Lime water.

C. Silver nitrate solution.

D. Water.

7. Which is NOT an example of a chemical change?

A. Rusting iron

B. Boiling water

C. Burning wood

D. Baking bread

8. Which of the following statements about crude oil is INCORRECT?

A. It can be used for making plastics.

B. It is a fossil fuel that takes millions of years to form.

C. It is usually used directly as a fuel.

D. It is a mixture of different hydrocarbons.

X

substance A

AYY

mixture of copper

oxide and carbon

powder heat


9. The following diagrams show the structures of molecules of four hydrocarbons. Which hydrocarbon has

the lowest boiling point?

A B

C D

10. Bitumen is NOT used as fuel because

A. it burns with a lot of smoke.

B. its boiling point is high.

C. it is expensive.

D. it gives out little heat when it burns.

11. Which of the following is a man-made material?

A. Plastic

B. Wood

C. Stone

D. Gold

12. Plastics are

(1) mainly made up of hydrocarbons.

(2) made up of long-chained macromolecules.

(3) derived from naphtha.

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

13. Which of the following is an advantage of using plastic rather than glass to make water bottles?

A. Plastics are good electrical insulators.

B. Plastics can be easily dyed.

C. Plastics are light and do not break easily.

D. Glass bottles cause more environmental pollution than plastic bottles.


14. The outer case of electric sockets and plugs are made of plastics because

(1) plastics can be easily moulded into different shapes.

(2) plastics are good insulators of electricity.

(3) plastics are strong and resistant to corrosion.

A. (1) and (2) only

B. (1) and (3) only

C. (2) and (3) only

D. (1), (2) and (3)

15. Which of the following materials is a composite material?

A. concrete

B. Steel

C. polystyrene

D. reinforced concrete

16. The bodies of speedboats are usually made of glass-fibre-reinforced plastics because glass-fibre-reinforced

plastics are

(1) strong.

(2) heat-resistant.

(3) of low densities.

A. (3) only

B. (1) and (2) only

C. (1) and (3) only

D. (1), (2) and (3)

17. Which of the following contains NO primary food substances?

A. Bread

B. Eggs

C. Salt

D. Sugar

18. Which of the following is the best for a boy suffering from kwashiorkor?

A. Providing different kinds of food for the boy

B. Providing water for the boy

C. Exposing the boy to sunlight

D. Providing multi-vitamins for the boy

19. Which of the following food is the richest source of vitamin C?

A. Milk

B. Kiwi fruits

C. Banana

D. Carrots


20. Which of the following food help(s) prevent anaemia?

(1) Beef

(2) Pork

(3) Fresh green vegetables

A (3) only

B (1) and (2) only

C (1) and (3) only

D (1), (2) and (3)

Section D : Conventional Questions (45 marks)

1. The diagram below shows an experimental set-up for fractional distillation of crude oil.

(a) Give TWO safety precautions that should be taken during the experiment. (2 marks)

(b) Why isn’t test tube A stoppered? (3 marks)

(c) Why is test tube A put inside a beaker of iced water? (1 mark)

(d) Keith obtains four fractions (A, B, C and D) of crude oil as shown.

(i) Apart from colours, compare the following properties between the fraction B and D.

(I) molecular size (2 marks)

(II) amount of black smoke produced when burnt (2 marks)

(ii) Describe how we can test for viscosity of the above fractions safely. (2 marks)


2. The diagram below shows the fractionating tower of crude oil and boiling point ranges of five fractions (A

to E) collected in the tower.

(a) Describe briefly how fractional distillation is carried out. (4 marks)

(b) Name fraction E and Give ONE use of it. (2 marks)

(c) Use the letters in the above diagram, suggest ONE fraction of crude oil that can be used

(i) as a household fuel. (1 mark)

(ii) as a fuel for motor cars. (1 mark)

(d) Give TWO uses of the fraction C. (2 marks)

B

C

D

E

fuel oil

bitumen

A

lubricating oil

crude oil

heat

below 40C

40–70C

70–170C

170–250C

250–350C

over 350C


3. The diagram below shows the structure of an ethene molecule and the formation of polythene from ethene.

(a) Atoms of what elements join to form an ethene molecule? (2 marks)

(b) Which molecule above is a macromolecule? (1 mark)

(c) Is the formation of polythene from ethene a physical or chemical change? (1 mark)

(d) What is the purpose of adding catalyst during the formation of polythene? (1 mark)

(e) Compare and explain the boiling points of ethene and polythene. (2 marks)

(f) Polythene is a kind of plastic. State TWO environmental problems associated with the disposal of

plastics (2 marks)

4. Vitamin D deficiency is common in Hong Kong people. People who do not get enough vitamin D have

weaker bones and a higher risk of bone fractures. Besides, deficiency in vitamin D is also associated with

heart diseases, high blood pressure, depression (抑鬱症) and even cancers.

(a) Write down ONE way of obtaining vitamin D other than eating. (1 mark)

(b) Suggest TWO kinds of food that are rich in vitamin D. (2 marks)

(c) Suggest TWO reasons why many Hong Kong people do not get enough vitamin D. (2 marks)

(d) Write down ONE health benefit of taking vitamin D supplements. (1 mark)

(e) Give ONE reason why we should consult doctors before taking vitamin D supplements. (1 mark)

5. A man has suffered from constipation for several days.

(a) Suggest ONE cause of constipation. (1 mark)

(b) Are the faeces of the man likely to be soft or hard? Explain briefly. (2 marks)

(c) (i) Suggest ONE kind of food which can improve the problem. (1 mark)

(ii) Which food substance was inside the food mentioned in (c)(i). Describe briefly its function.

(3 marks)

END OF PAPER

C H

H

C H

H

an ethene molecule

many ethene

molecules

polythene

catalyst


St. Joseph’s Anglo-Chinese School

First Term Examination 2014-2015


Suggested Solution

Section A True and False Questions (10 marks, 1 mark each)

1. F

2. F

3. F

4. F

5. T

6. F

7. F

8. T

9. F

10. T

Section B Fill in the blanks (25 marks, 1 mark each)

(a) Copper (b) malleable (c) ductile (d) properties (e) price

(f) abundant (g) crust (h) reused (i) metals (j) compound

(k) element (l) scenery (m) pollution (n) reduction (o) nitric acid

(p) silver nitrate (q) flame (r) ion (s) carbon

dioxide

(t) molecule

(u) matrix

(v) carbohydrates (w) proteins (x) minerals (y) vitamins

Section C Multiple Choice Questions (20 marks, 1 mark each)

1. C 2. B 3. B 4. D 5. D 6. B 7. B 8. C 9. A 10. A

11. A 12. D 13. C 14. D 15. D 16. C 17. C 18. A 19. B 20. C

Section D. Conventional Questions (45 marks)

1. (a) wear safety goggles / wear laboratory coat / put the whole setup into the fume cupboard while heating

(2 marks)

(b) Some oil fractions are turned into gas under heating. (1 mark)

If test tube A is stoppered, the gas pressure inside the boiling tube and test tube A will increase

(1 mark)

until the boiling tube or the test tube break (1 mark)

(c) To condense and collect the distillate / fraction. (1 mark)

(d) (i) (I) The molecular size of fraction D is larger than that of fraction B. (2 marks)

(II) The amount of black smoke produced in fraction D is more than that in fraction B when

burnt. (2 marks)

(ii) Stopper the test tube and tilt it (1 mark)

Observe if the liquid flows easily inside the test tube (1 mark)


2. (a) Crude oil is first heated at about 400oC (1 mark)

This hot crude oil is then pumped into a fractionating tower. (1 mark)

Each level of the tower is kept at a particular temperature. The higher levels are cooler than the lower

levels. (1 mark)

Hydrocarbons of different boiling points will condense at different levels. (1 mark)

(b) E: diesel which is used as a fuel for heavy vehicles / truck (2 marks)

heavy car / big car

(c) (i) A (1 mark)

(ii) B (1 mark)

(d) As a raw materials for producing town gas (1 mark)

As a raw materials for making plastics / other chemicals. (1 mark)

3. (a) Hydrogen and carbon (2 marks)

(b) Polythene. (1 mark)

(c) Chemical change. (1 mark)

(d) To speed up the joining of ethene molecules to form polythene. (1 mark)

(e) Polythene has a higher boiling point (1 mark)

because its molecular size is larger (1 mark)

(f) Shortening the life of landfills / endangering marine life / producing harmful substances when burnt.

(Any two) (2 marks)

4. (a) Having outdoor activities appropriately / sunbathing (1 mark)

sunlight

(b) Milk / butter / eggs / fish liver oil / cheese (2 marks)

(Any two)

fish / fish oil

(c) Many Hong Kong people spend most of the time indoors, therefore they do not receive much sunlight.

(1 mark)

They eat too little food that are rich in vitamin D. (1 mark)

not eating eggs / eat outside / stay at home

(d) Lower the risk of bone fractures / heart diseases / high blood pressure / depression / cancers.

(1 mark)

(e) To avoid taking too much vitamin D / (1 mark)

Taking vitamin D supplements may affect our health if we are suffering from certain diseases or

taking certain drugs. (1)

5. (a) Deficiency of dietary fibre in the diet / drink insufficient of water (1 mark)

(b) The faeces are likely to be hard (1 mark)

because the faeces hold less water due to the lack of dietary fibre (1 mark)

(c) (i) fruits / vegetables (1 mark)

(ii) dietary fibres (1 mark)

It adds bulk to food / holds water (1 mark)

This stimulates the muscles in the intestinal wall to contract so as to push the food along

(1 mark)



14/15 1st Term Examination

Revision on vocabulary

Section 13.1

metals

appearance

electrical conductivity

heat conductivity

malleable

ductile

strength

melting point

boiling point

density

shiny

Section 13.2

ease of extraction

availability

Section 13.3

elements

metals

compounds

physical method

gold panning

chemical method

carbon reduction

physical change

chemical change

Section 13.5

disposal

landfills

spoils the scenery

pollution

reduce

reuse

Supplementary note

atoms

proton

neutron

electron

nucleus ions

flame test

silver nitrate test

chlorides

carbonates

Section 14.2

crude oil

mixture

compounds

hydrocarbons

hydrogen

carbon

molecules

fractional distillation

fractions

fractionating tower

viscosity

ease of evaporation

ease of burning

black smoke

condense

liquefied petroleum gas

petrol

naphtha

diesel

fuel

raw materials

Section 14.3

plastics

polythene

ethene

macromolecule

monomers

polymers

light and strong

easily moulded

easily dyed

resistant to corrosion

good insulators of heat

Section 14.4

landfilling

endangering marine life

incinerators

carcinogens

Section 14.5

composite materials

matric

reinforcing material

Section 12.1 & 12.2

calcium

carbohydrate

dietary fibre

fat

minerals

protein

starch

vitamins

deficiency disease

food substance

peristalsis

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