Advertisements
Advertisements
Questions
Explain the characteristics of compounds
Write any five characteristics of compounds.
Advertisements
Solution
- A compound is formed only when the constituent elements combine in a fixed proportion.
- The properties of a compound are different from those of its constituent elements
- A compound cannot be broken down by physical methods.
- This is because a compound is made up of different elements that are chemically combined. Sodium chloride cannot be separated by physical methods such as filtration.
- A compound can be separated into its constituent elements by chemical methods only.
RELATED QUESTIONS
What are the different types of mixtures ?
State four important characteristics of compounds
Write the molecular formulae of compound calcium oxide.
State two characteristics of water which prove that it is a – compound.
What is the molecular formula of the following compound?
Sodium chloride
Explain the term mixture.
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
Match the following.
| Iron | For making wires |
| Copper | Sewing needle |
| Tungsten | As a fuel for ignition in rocket |
| Boron | Making the filament of a bulb |
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is known to form the largest number of compounds.
