Advertisements
Advertisements
Question
Define Compounds
Solution
Compounds: Compounds are pure substances composed of two or more elements in definite proportion by mass and has a definite set of properties. The compound is made up of only one kind of molecules
APPEARS IN
RELATED QUESTIONS
Select the correct alternative from the choices given for the following statement:
A set of mixture is
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
State four important characteristics of compounds
Name the elements present in Marble
What is the proportion of element present in the following compound?
CaO
Name two compounds which dissolve in water.
Write the molecular formulae of compound hydrogen sulphide.
Write the molecular formulae of compound lead sulphide.
What is the molecular formula of the following compound?
glucose
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
What is meant by compound?
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.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
The other name for potassium hydroxide is caustic potash.
When does the pressure of the gas increase?
A compound has a definite ______.
A compound has a fixed ______.
