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प्रश्न
Name the terms for the particles of matter which may or may not have independent existence.
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उत्तर
this criteria is shown by atoms of any matter which may exist alone (like helium) or may not exist alone and exist in molecular form (like oxygen/o₂ )
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संबंधित प्रश्न
Name the terms for the change of vapour into a liquid.
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What are the characteristics of matter?
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 meant by saying that metals are malleable and ductile ?
State two physical properties on the basis of which metals can be distinguished from non-metals.
Name a metal which has no fixed shape.
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Define Foam Give one example.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Name the process you would use to separate a mixture of water and alcohol.
How will you separate a mixture of common salt, sulphur powder and sand ?
The boiling point of liquid argon is :
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Define the term matter.
Define the term matter.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Define the term matter.
