close

Chemistry Exam paper 2

 Chemistry Exam paper two

w

t

ap

eP

m

e

tr

. By

w

omkring

. c

s i9000

er

COLLEGE OR UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMS

International General Certificate of Secondary Education

*2339708426*

0620/02

CHEMISTRY

May/June 2007

Daily news 2

one hour 15 minutes

Applicants answer for the Question Daily news.

No Extra Materials necessary.

READ THESE KINDS OF INSTRUCTIONS INITIAL

Write the centre number, Candidate quantity and identity in the areas at the top of this site. Write in dark green or dark-colored pen.

You may want to use a pen for any diagrams, graphs or rough working. Do not employ staples, conventional paper clips, highlighters, glue or perhaps correction smooth. DO NOT WRITE IN ANY BAR CODES.

Answer your concerns.

A copy in the periodic stand is printed on page 16.

At the end from the examination, fasten all your work securely with each other. The number of represents is given in brackets [ ] by the end of each question or portion question.

Pertaining to Examiner's Make use of

1

2

3

four

5

6

7

Total

This doc consists of 12-15 printed pages and you blank site. IB07 06_0620_02/6RP

В© UCLES 2007

[Turn over

2

you

For

Examiner's

Use

The structures of some factors and substances are demonstrated below.

S

S

L

S

T

S

S

H

S

H

C

C

H

S

H

A

L

H

L

C

H

H

M

C

Na+ Cl – Na+ Craigslist – Na+

Cl – Na+ Craigslist – Na+ Cl –

Na+ Cl – Na+ Cl – Na+

N

H

Pb Pb Pb Pb Pb

Pb Pb Pb Pb

H

L

Cl – Na+ Cl – Na+ Cl –

D

Pb Pb Pb Pb Pb

E

Farreneheit

(a) Response these concerns using the albhabets A to F.

(i) Which structure is ethane?

[1]

(ii) Which framework contains ions?

[1]

(iii) Which composition is a gas that transforms moist reddish litmus paper blue?

[1]

(iv) Which will structure is sodium chloride?

[1]

(v) Which structure is the main ingredient of natural gas?

[1]

(vi) Which two structures are organic compounds?

[1]

(vii) Which two structures are elements?

[1]

В© UCLES 2007

0620/02/M/J/07

3

For

Examiner's

Employ

(b) Composition F can be lead.

(i) What is the origin of the tiny amount of lead within the air? [1]

(ii) State an adverse effect of lead in health.

[1]

(c) Framework A is sulphur. Explain why using fossil fuels made up of sulphur can be harmful to the surroundings.

[2]

[Total: 11]

В© UCLES 2007

0620/02/M/J/07

[Turn over

4

2

For

Examiner's

Use

Climate contains many different gases.

(a) State the names of the two gases which will make up most of the air. [2]

(b) A sample of atmosphere is drawn through the device shown under. to

suction

pump

air

heated birdwatcher

white (anhydrous)

copper sulphate

limewater

(i) When the atmosphere is drawn through the equipment, the lime green water becomes milky. Which will gas turns lime water milky?

[1]

(ii) The white (anhydrous) copper sulphate turns green. State the name of the substance which turns white colored copper sulphate blue.

[1]

(iii) O2 is taken from the air by simply passing it above heated copper mineral. Complete the equation with this reaction.

2Cu +

В© UCLES 2007

в†’

CuO

0620/02/M/J/07

[2]

5

Pertaining to

Examiner's

Employ

(c) Genuine air consists of about 1% argon.

(i) In which Amount of the Periodic Table can be argon?

[1]

(ii) State the name of the Number of elements to which argon goes. [1]

(iii) Draw the electronic structure of argon.

[1]

(iv) Why is argon used in lights?

[1]

(v) An isotope of argon (ar) has a mass number of 40.

Calculate the amount of neutrons in this isotope of argon.

[1]

(d) A small amount of xenon exists in the air.

A few compounds of xenon have already been made in recent years.

Calculate the relative molecular mass of xenon difluoride, XeF2.

[1]

В© UCLES 2007

0620/02/M/J/07

[Turn over

six

For

Examiner's

Use

(e) The structure of another compound of xenon can be shown under. O

Farreneheit

F

Xe

F

Farrenheit

(i) Write down thier simplest solution for this substance of xenon (xe).

[1]

(ii) Describe the kind of bonding from this compound.

[1]

[Total: 14]

В© UCLES 2007...

 Organizational Structure of Achievement Essay

Organizational Structure of Achievement Essay

Organizational Composition of Accomplishment Dexter Boone Everest University I think we need management to run business effectively. Management set goals and make sure they can be met.…...

Read
 Life in Elizabethan Great britain during the Renaissance Research Newspaper

Life in Elizabethan Great britain during the Renaissance Research Newspaper

Life in Elizabethan England through the Renaissance Why is Elizabethan England known as the " Golden Age”? Elizabethan Great britain (in the mid 1500's to early 1600's)…...

Read