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chemistry igcse acapprinted 55 · PDF 55
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C) Metallic
D) Hydrogen
Answer: B) Ionic
2. Which of the following pairs of elements will form a covalent bond?
A) Sodium and chlorine
B) Magnesium and oxygen
C) Carbon and oxygen
D) Potassium and bromine
Answer: C) Carbon and oxygen
3. Which property is characteristic of substances with giant covalent
structures?
A) High melting and boiling points
B) Conduct electricity when solid
C) Low melting and boiling points
D) Soluble in water
Answer: A) High melting and boiling points
4. Which of the following is true about the bonding in methane (CH₄)?