Advertisements
Advertisements
Question
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Advertisements
Solution
We can pound salt crystals. Either we can use mortar pestle or we can also crush the crystals of salt in a grinder. Such powdered salt can be easily applied on the corncob.
APPEARS IN
RELATED QUESTIONS
Solids have definite shape and definite volume.
Define the following term of Atom .
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Define solvent.
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
What type of matter glass is?
