3.
A substance when placed in water floats on it. What do you conclude from this?
Name two materials which do not dissolve in water and are lighter than water.
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Answers
Explanation:
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Density—Sink and Float for Liquids | Chapter 3: Density | Middle ...
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Name two materials which do not dissolve in water and are lighter than water.
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Alcohol floats on oil and water sinks in oil. Water, alcohol, and oil layer well because of their densities, but also because the oil layer does not dissolve in either liquid. The oil keeps the water and alcohol separated so that they do not dissolve in one another.
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CBSE NCERT Solution for Class 6 - Chemistry - Sorting of Materials
Name five objects which can be made from wood. Answer: Objects made ... (v) Sugar does not dissolve in water. ... Generally, substances have less density than oil and water can float.
Explanation:
An object that floats in the water is known as being positively buoyant. An object that sinks to the bottom is negatively buoyant, while an object that hovers at the same level in the water is neutrally buoyant.
The two materials that are lighter than the water are wood and Ice.
The wood will not get dipped into the water due to its light weight that is why we use wood for making boats in order not to sink in the water.
The Ice will not sink in the water. They both can float on the water.