Answer the following questions in brief: 1.List the two conditions essential for using distillation as a method for separation of the components from a mixture. 2.Which method is used to separate two immiscible liquids? 3.Name two elements which are in liquid state at room temperature? 4.What is meant by solubility? 5.Write 2 examples of chemical change you observed around you.
Answers
Answer:
Explanation:
1.Two conditions essential for using distillation method are as follows. The two liquids should be miscible with each other. This means that the two liquids should properly mix with each other. The difference in boiling point of the two liquids should be less than 25 degree celsius.
2.Separating immiscible liquids is done simply using a separating funnel. The two liquids are put into the funnel and are left for a short time to settle out and form twolayers. The tap of the funnel is opened and the bottom liquid is allowed to run.
3.At this temperature and ordinary pressure, only two elements are liquids: Bromine. Mercury.
4.the ability to be dissolved, especially in water
5.A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.