Q-1)What do you mean by pure substance?
Q-2) Is rusting a type of slow combustion?
Q-3) how to separate the mixture of sugar and sand?
Q-4) what is filter paper?
Answers
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Yes, rusting of iron is an example of slow combustion.
The sugar if you dissolve in water, the solution can be washed off and the sand will remain suspended. ...
The sand can be filtered and separated from water by filtration process using filter paper.
Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine solid particles from liquids or gases.
Answer:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Yes, rusting of iron is an example of slow combustion.
The sugar if you dissolve in water, the solution can be washed off and the sand will remain suspended. ...
The sand can be filtered and separated from water by filtration process using filter paper.
Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine solid particles from liquids or gases.