Differentiating homogeneous and heterogeneous mixtures.
Materials needed: tea leaves, sugar, water, milk, a sieve, a cup, a pan and a gas burner
Instructions:
(1) Mix tea leaves, sugar, water and milk in a pan and stir for 2-3 minutes.
(2) Heat this mixture on the burner for 4-5 minutes. When the mixture comes to a boil, filter it through a sieve in a cup.
Observation:
Mixture in the first case (before heating)________ (is/is not) evenly mixed.
Mixture in the second case (after heating)________(is/is not) evenly mixed.
Conclusion:
Mixture 1 (in the pan) is ________ solution.
Mixture 2 (in the cup) is ________solution.
Important Questions on Solutions
A sealed bottle of soda water contains carbon dioxide gas dissolved in water. When you open the bottle, the gas bubbles come out of the solution. What is the solvent in soda water?
A sealed bottle of soda water contains carbon dioxide gas dissolved in water. When you open the bottle, the gas bubbles come out of the solution. What is the solute in soda water?
Ocean water is a solution. It contains about 96% water, 4% salt, and very small amounts of minerals. What is the solvent in ocean water?
