Advertisements
Advertisements
प्रश्न
Explain the difference between Atoms and molecules.
Advertisements
उत्तर
| Atoms | Molecules | |
| 1 | Atoms are the smallest particles of an element that can participate in a chemical reaction. | Molecules are the smallest parts of an element or compound, which exist independently. |
| 2 | They do not break up during chemical reactions. | They break up during chemical reactions. |
| 3 | They may or may not exist in a free state. | They exist in free forms. |
संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Write true or false
All pure substances have characteristic melting and boiling points.
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Define a pure substance. How many types of pure substances do you know?
Give two examples of the following.
Elements which are liquids
Give one use of the following substance:
Iron
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Write the names of elements from the following symbol:
Cu
Higher-Order Thinking questions:
Why is hydrogen considered an element?
