CIE iGCSE Co-Ordinated Science C2.1 Elements, compounds and mixtures Exam Style Questions Paper 3
Question
(a) The list gives the names of seven elements.
calcium
carbon
copper
oxygen
nitrogen
potassium
sulfur
Answer the questions about these elements.
Each element may be used once, more than once or not at all.
State which element:
(i) is in Group I of the Periodic Table.
…………………………………………………………………………………………………………………….
(ii) is in diamond.
…………………………………………………………………………………………………………………….
(iii) is 78% of clean air.
…………………………………………………………………………………………………………………….
(iv) gives a lilac flame test.
…………………………………………………………………………………………………………………….
(v) is used in electroplating.
…………………………………………………………………………………………………………………….
(vi) is used in the manufacture of sulfuric acid.
…………………………………………………………………………………………………………………….
(b) Atoms contain protons, neutrons and electrons.
State which of these particles:
are in shells around the nucleus ………………………………….
have a positive charge ………………………………….
have the smallest mass. ………………………………….
▶️Answer/Explanation
Ans: 2(a)(i) potassium ;
2(a)(ii) carbon ;
2(a)(iii) nitrogen ;
2(a)(iv) potassium ;
2(a)(v) copper ;
2(a)(vi) sulfur ;
2(b) electrons ;
protons ;
electron ;