Question 12 of 25beginner🧠 RememberShort Answer2 marks

Can you list a few things that: Do not dissolve in water

Correct Answer

Things that do not dissolve in water include: cooking oil, sand, stones, plastic, wood, chalk powder, sawdust, flour, and leaves.

Activity 3 demonstrates that substances like cooking oil do not dissolve in water. These insoluble substances either float on water, sink to the bottom, or form separate layers.

Understanding this helps students recognise that some pollutants may be visible in water while others remain invisible.

Exercise: Activity 3 | Q: 3 | (Page Page 10)
For More Understanding

Explanation

Activity 3 demonstrates that substances like cooking oil do not dissolve in water. These insoluble substances either float on water, sink to the bottom, or form separate layers. Understanding this helps students recognise that some pollutants may be visible in water while others remain invisible.

Solution Steps

  1. Identify substances that do not dissolve in water: cooking oil, sand, stones, plastic, wood, chalk powder, sawdust, flour, and leaves

  2. Observe that insoluble substances either float on water, sink to the bottom, or form separate layers

  3. Recognize that this understanding helps identify visible versus invisible pollutants in water

PreviousNext