Advertisements
Advertisements
Question
Differentiate between the terms elements, compounds, and mixtures with suitable examples.
Solution
Element – Element is a pure substance
e.g. Potassium
- It is the basic unit of matter and cannot be broken down into two or simpler substances by any means.
- It is mainly classified into metals and non-metals.
Compound – Compound is a pure substance
e.g. Potassium chloride
- It is formed by a combination of two or more elements.
- The elements are combined together in a fixed ratio.
Mixture – Mixture is an impure substance
e.g. Potassium chloride solution
- It is formed by a combination of two or more pure substances.
- The pure substances are mixed together in any ratio.
APPEARS IN
RELATED QUESTIONS
Name the main metal present in the following :
Haemoglobin
Why is it named so?
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
By using a separating funnel
Fill in the blank:
_________ is a process to obtain a very pure form of a solid dissolved in a liquid.
Give one word answer
The process of transferring the clean liquid after the solid settles at the bottom of the container
Fill in the blank
A pure substance has definite _______ and constant _________.
Fill in the blank
Use of a __________ to separate the components of a mixture of solids is based on the difference in the size of the components.
Differentiate between the following.
solution and suspension
What is centrifugation ? Also write the principle on which it works.
Name the techniques used to separate a solid from its solution.
