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प्रश्न
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
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
Define mixture.
Give Two Examples for Each of the Following: Non-metals
Give one use of the following substance:
Coal
Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of
Tick (√) the correct alternative from the choice given for the following statement
The most ductile metal.
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?
The first letter of an element is always written in ______ letter.
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
Match the following.
| 1. | Element | Made up of molecules |
| 2. | Compound | Impure substance |
| 3. | Colloid | Settles down on standing |
| 4. | Suspension | Pure substance |
| 5. | Mixture | Made up of atoms |
