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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
Choose the most appropriate answer
A solvent of Iodine is
Give two examples of the following.
Metals which are soft
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Select the correct answer from the choice given below.
The element which is malleable
Match the compounds in List I – 1 to 20 with their correct formulas from in List II-A to T.
| List I | List II | ||
| 1 | Hydrochloric acid | A | NaCI |
| 2 | Potassium Hydroxide | B | NaOH |
| 3 | Sulphuric Acid | C | KCI |
| 4 | Zinc Hydroxide | D | Ca(OH)2 |
| 5 | Sodium Chloride | E | CaS |
| 6 | Nitric Acid | F | CuSO4 |
| 7 | Calcium Hydroxide | G | CaCO3 |
| 8 | Carbonic Acid | H | NH4CI |
| 9 | Sodium hydroxide | I | HCI |
| 10 | Copper sulphate | J | ZnO |
| 11 | Potassium Chloride | K | HNO3 |
| 12 | Calcium Carbonate | L | H2CO3 |
| 13 | Magnesium Sulphide | M | MgS |
| 14 | Zinc Sulphate | N | MgO |
| 15 | aluminium Hydroxide | O | KOH |
| 16 | Sodium Carbonate | P | ZnSO4 |
| 17 | Calcium Sulphide | Q | Na2CO3 |
| 18 | Magnesium Oxide | R | H2SO4 |
| 19 | Zinc Oxide | S | AI(OH)3 |
| 20 | Ammonium Chloride | T | Zn(OH)2 |
Elements are made up of______ kinds of atoms.
Give an example for the elements derived from their Latin names.
Differentiate between elements and compounds.
