II. Short Answer Questions.
1. What is lustre? Name a few materials
that possess lustre
2. Differentiate between transparent and
translucent materials
3. What are immiscible liquids?
4. When does a material float on water?
5. Why is the body of a cooking utensil made
of metal?
6. Give two examples of good conductors of
heat and electricity
What is matter?
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Answer:
1. Lustre is shine on a surface/ object. Gold is an example of a lustrous object.
2. The materials in which everything can be seen through them or light passes fully through them are called transparent materials.
The materials in which only a little bit of light passes and we cannot see fully through them is called a translucent material.
3. The liquids that don't get mixed are called immiscible liquids.
4. A material floats on water when it's very lightin weight.
5. Metals are good conductors of heat and get heated up faster , thus cooking utensils are made up of metals.
6. Good conductors - Copper, Silver
Bad conductors - Air, Glass
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