Home / iGCSE / Coordinated Sciences / C8.2 Group I properties Paper 3

CIE iGCSE Co-Ordinated Science C8.2 Group I properties Exam Style Questions Paper 3

CIE iGCSE Co-Ordinated Science C8.2 Group I properties Exam Style Questions Paper 3

Question

11. (a) (i) Identify three metals from Table 11.1 that have only one electron in their outer shell as a neutral atom.

▶️Answer/Explanation

Answer: lithium; potassium; sodium

Sub-topic Code: C16.1 (Atomic Structure)

Detailed Solution: Lithium, potassium, and sodium are Group I metals, which have only one electron in their outer shell as neutral atoms.

11. (a) (ii) Identify the two metals from Table 11.1 that are Group II metals.

▶️Answer/Explanation

Answer: calcium; magnesium

Sub-topic Code: C16.1 (Atomic Structure)

Detailed Solution: Calcium and magnesium are Group II metals, which have two electrons in their outer shell as neutral atoms.

11. (b) State three general physical properties that distinguish metals from non-metals.

▶️Answer/Explanation

Answer: good thermal conductors; good electrical conductors; (relatively) high melting point / boiling point; malleable

Sub-topic Code: C16.1 (Metals and Non-Metals)

Detailed Solution: Metals are good thermal and electrical conductors, have relatively high melting and boiling points, and are malleable (can be hammered into shape).

11. (c) Use words from the list to complete the description of electroplating.

▶️Answer/Explanation

Answer: negative; positive; electrolyte

Sub-topic Code: C19.1 (Electrolysis)

Detailed Solution: In electroplating, the object to be plated is connected to the negative terminal (cathode), the piece of copper is connected to the positive terminal (anode), and the aqueous copper(II) sulfate acts as the electrolyte.

Scroll to Top