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प्रश्न
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
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उत्तर
1. Symbols increase scientific communication across the world.
2. Symbols help to make equations and data shorter and concise.
3. Symbols are helpful for Scientists as it would take time and paper to do their job.
They had to write out the full name of every element instead of its symbol
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संबंधित प्रश्न
Give one example for the following type of mixtures
solid-solid homogenous mixture.
Define mixture.
Match the columns.
| column A | column B |
|
1. to separate grain from chaff |
a. filtration |
| 2. to saparate sawdust from water | b. sedimentation and deeantation |
| 3. to separate iodine from sodium chloride | c. winnowing |
| 4. to separate iron fillings from sand | d.sublimation |
|
5. it is used to separate sand and water |
e maganetic separation |
|
|
f .handpicking |
Name: A form of carbon used as a gem
Name: Two substances used to make electric wires
Fill in the blank
A metal which is a liquid at room temperature is _______.
Indicate whether the following statement is true or false:
Metals can be polished.
Write the names of elements from the following symbol:
Xe
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Why are utensils made up of aluminium and brass?
