Question

Write two differences between metals and non-metals based on chemical properties.

Hint:

Always specify "chemical properties" when asked, and avoid giving physical differences like malleability or luster.

Answer 1

Step 1: Understanding the Concept:
Metals and non-metals behave differently in chemical reactions due to their tendency to lose and gain electrons, respectively.

Step 2: Detailed Explanation:
1. Nature of Oxides: Metals react with oxygen to form basic oxides (e.g., \(\text{MgO}\)). Non-metals react with oxygen to form acidic or neutral oxides (e.g., \(\text{SO}_2\)).
2. Reaction with Dilute Acids: Active metals (above hydrogen in reactivity series) react with dilute acids to displace hydrogen gas (e.g., \(\text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2\)). Non-metals do not react with dilute acids to displace hydrogen because they are electron acceptors, not donors.

Step 3: Final Answer:
Metals form basic oxides and displace hydrogen from acids, whereas non-metals form acidic oxides and do not displace hydrogen from acids.