BOTSWANA EXAIU I NATIONS COUNC I L
#v Botswana General Certificate of Secondary Education
CANDIDATE
NAME
CENTRE CANDIDATE
NUIVIBER NUMBER
CHEMISTRY 0570/03
Paper 3 October/November 2022
t hour 15 minutes
Candidates answer on the Question Paper
1
c)
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name in the spaces provided at the top of this page.
Write in dark blue or black pen.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Answer allquestions
Write your answers in the spaces provided on the question paper.
Show your working for any calculations.
You may use a calculator.
The number of marks is given in brackets [ ] at the end of each question or part question
A copy of the Periodic Table is printed on page 12
For Examiner's Use
c\
o
o
1
2
3
4
5
6
Total
': .:-t:
l'e*L-i...irl
This document consists of 12 printed pages.
o BEC 2022 [Turn over
, 2
1 (a) Choose from the following substances to answer the questions below: For
Examiner's
Use
" carbon dioxide
nitrogen monoxide
copper(Il) oxide
calcium oxide
silicon(IV) oxide
sulphur dioxide
Each substance can be used once, more than once, or not at all.
(i) Which substance has a similar structure to that of diamond?
t1I
!+ (ii) Which substance is used as bleach in the manufacture of wood pulp? a.
O
l1j
(iii) Which substance is formed in the reaction between gases in the air in a car engine?
l1l
(iv) Which substance leads to increase in global temperatures?
t1l
(v) Which substance is removed by calcium carbonate in the blast furnance?
11I
(vi) Which substance is used in treatment of acidic soils?
11l
c!
o
(b) Carbon monoxide gas is another gas emitted through car exhausts
(i) How is carbon monoxide formed?
t1I
(ii) Explain the effect of carbon monoxide on people's health
l1l
aBEC2022 a570l03totNt22
#v Botswana General Certificate of Secondary Education
CANDIDATE
NAME
CENTRE CANDIDATE
NUIVIBER NUMBER
CHEMISTRY 0570/03
Paper 3 October/November 2022
t hour 15 minutes
Candidates answer on the Question Paper
1
c)
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name in the spaces provided at the top of this page.
Write in dark blue or black pen.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Answer allquestions
Write your answers in the spaces provided on the question paper.
Show your working for any calculations.
You may use a calculator.
The number of marks is given in brackets [ ] at the end of each question or part question
A copy of the Periodic Table is printed on page 12
For Examiner's Use
c\
o
o
1
2
3
4
5
6
Total
': .:-t:
l'e*L-i...irl
This document consists of 12 printed pages.
o BEC 2022 [Turn over
, 2
1 (a) Choose from the following substances to answer the questions below: For
Examiner's
Use
" carbon dioxide
nitrogen monoxide
copper(Il) oxide
calcium oxide
silicon(IV) oxide
sulphur dioxide
Each substance can be used once, more than once, or not at all.
(i) Which substance has a similar structure to that of diamond?
t1I
!+ (ii) Which substance is used as bleach in the manufacture of wood pulp? a.
O
l1j
(iii) Which substance is formed in the reaction between gases in the air in a car engine?
l1l
(iv) Which substance leads to increase in global temperatures?
t1l
(v) Which substance is removed by calcium carbonate in the blast furnance?
11I
(vi) Which substance is used in treatment of acidic soils?
11l
c!
o
(b) Carbon monoxide gas is another gas emitted through car exhausts
(i) How is carbon monoxide formed?
t1I
(ii) Explain the effect of carbon monoxide on people's health
l1l
aBEC2022 a570l03totNt22
