Distinguish between a strong acid and a weak acid, provide IUPAC names, distinguish between renewable and non-renewable energy sources with examples, explain why needle tips are pointed and earth-movi

Here's a review of your answers:

2(a) Distinguish between a strong acid and a weak acid
✅ Correct. Your distinction is accurate.

2(b) IUPAC Names
✅ Correct. All the IUPAC names provided are accurate.

2(c)(i) Distinguish between renewable and non-renewable sources of energy
✅ Correct. Your distinction is accurate and concise.

2(c)(ii) Examples
✅ Correct. Both examples are appropriate for their respective categories.

3(a)(i) Why are the tips of needles pointed?
✅ Correct. Reducing the area of contact increases pressure, making piercing easier.

3(a)(ii) Why are wheels of earth-moving machines broad?
✅ Correct. Increasing the area of contact reduces pressure, preventing the machine from sinking.

3(b)(i) Distinguish between a base and an alkali
✅ Correct. Your distinction accurately defines a base and specifies that an alkali is a soluble base.

3(b)(ii) One natural source of each base
✅ Correct. All the natural sources listed are accurate.