, 2
1
(a) Table 1.1 shows information about some of the elements in the Periodic Table.
Table 1.1
Atomic Group Electron
Element Period
Number Number Configuration
8 16(6) 2 2.6
........................
Sodium 11 2.8.1
........................ ........................
Chlorine 17(7) 3 2.8.7
........................
Calcium 20 2 4
........................
(i) Complete Table 1.1.
Use the Data Sheet. [5]
(ii) When atoms lose or gain electrons, they form charged particles called ions.
State the electron configuration of Na+ ions and Cl – ions.
Na+ ...................................................................................................................................................
Cl – ....................................................................................................................................................
[2]
© OCR 2024
, 3
(b) Ionic compounds form when electrons are transferred from one atom to another.
A dot and cross diagram is a model used to show the formation of an ionic compound.
Complete the diagram to show the arrangement of electrons and the charge of the ions in
calcium oxide.
Ca Ca
O O
[2]
(c) Table 1.2 gives information about some other ionic compounds.
Table 1.2
Compound Ions Present Formula Relative Formula Mass
Na+ and Cl – NaCl 58.5
...............................
Magnesium chloride MgCl 2
................................ .......................................
Mg2+ and O2– 40.3
............................... ................................
Complete Table 1.2.
Use these relative atomic masses: Mg = 24.3, Cl = 35.5.
[5]
© OCR 2024 Turn over
, 4
2 This question is about climate change.
(a)
(i) Complete the sentence to describe how the presence of carbon dioxide in the atmosphere
causes an increase in global temperatures.
Put a ring around each correct option.
Global warming occurs when infrared / ultra violet / visible radiation coming from
the Earth / the Sun / space is absorbed by carbon dioxide which prevents heat leaving
the atmosphere.
[2]
(ii) Name one other greenhouse gas.
..................................................................................................................................................... [1]
(b) One method to reduce the amount of carbon dioxide in the atmosphere is called carbon capture.
Carbon dioxide from power stations is collected and buried deep underground.
State one other method to reduce the amount of carbon dioxide in the atmosphere.
..........................................................................................................................................................
..................................................................................................................................................... [1]
© OCR 2024
1
(a) Table 1.1 shows information about some of the elements in the Periodic Table.
Table 1.1
Atomic Group Electron
Element Period
Number Number Configuration
8 16(6) 2 2.6
........................
Sodium 11 2.8.1
........................ ........................
Chlorine 17(7) 3 2.8.7
........................
Calcium 20 2 4
........................
(i) Complete Table 1.1.
Use the Data Sheet. [5]
(ii) When atoms lose or gain electrons, they form charged particles called ions.
State the electron configuration of Na+ ions and Cl – ions.
Na+ ...................................................................................................................................................
Cl – ....................................................................................................................................................
[2]
© OCR 2024
, 3
(b) Ionic compounds form when electrons are transferred from one atom to another.
A dot and cross diagram is a model used to show the formation of an ionic compound.
Complete the diagram to show the arrangement of electrons and the charge of the ions in
calcium oxide.
Ca Ca
O O
[2]
(c) Table 1.2 gives information about some other ionic compounds.
Table 1.2
Compound Ions Present Formula Relative Formula Mass
Na+ and Cl – NaCl 58.5
...............................
Magnesium chloride MgCl 2
................................ .......................................
Mg2+ and O2– 40.3
............................... ................................
Complete Table 1.2.
Use these relative atomic masses: Mg = 24.3, Cl = 35.5.
[5]
© OCR 2024 Turn over
, 4
2 This question is about climate change.
(a)
(i) Complete the sentence to describe how the presence of carbon dioxide in the atmosphere
causes an increase in global temperatures.
Put a ring around each correct option.
Global warming occurs when infrared / ultra violet / visible radiation coming from
the Earth / the Sun / space is absorbed by carbon dioxide which prevents heat leaving
the atmosphere.
[2]
(ii) Name one other greenhouse gas.
..................................................................................................................................................... [1]
(b) One method to reduce the amount of carbon dioxide in the atmosphere is called carbon capture.
Carbon dioxide from power stations is collected and buried deep underground.
State one other method to reduce the amount of carbon dioxide in the atmosphere.
..........................................................................................................................................................
..................................................................................................................................................... [1]
© OCR 2024
