Question

1. Name a matter which exists in nature in all the three states.


2. How does a solution differ from a suspension?


3. What are compounds? Give name of any two compounds from your surroundings.


4. What are mixture? Which type of mixture is formed when you mix the following; Salt+water, soil+water,

milk+water​

Answer 1

Answer:

1. H20

3. When two or more substances are mixed in a fixed ratio,they are known as compounds.

eg:- H2O, NaCl

3. When two or more substances are mixed without any definite ratio they are known as mixture.

salt+water will give a homogeneous mixture

soil+water will give a heterogeneous mixture.

Answer 2

The correct answers are -

1. The three states of matter are solid, liquid, or gas. The matter that exists in nature in all three states is water.

2 A solution differs from suspension according to the size of the particle. A solution is a mixture of small ions and is transparent. Whereas, suspension has bigger and cloudy particles.

3 A compound is a substance consisting of two or more discrete elements. Examples are water, salt etc.

4 A mixture is a substance made up of two or more physically combined different substances. Salt water represents a homogeneous mix. Salt absolutely dissolves in water and dissociates in sodium and chloride ions. Soil+water will give a heterogeneous mixture. Milk + water is also a homogeneous solution.