Advertisements
Advertisements
प्रश्न
Define Compounds
उत्तर
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
संबंधित प्रश्न
Name the elements present in Washing soda
What is the proportion of element present in the following compound?
CO2
What is the proportion of element present in the following compound?
CaO
Name two compounds which dissolve in water.
State three differences between water and air.
State four differences between compounds and mixtures.
State the information obtained from the formula of a compound.
Write the molecular formulae of compound carbon monoxide
Select the correct answer from the choice given below.
A compound
What is the molecular formula of the following compound?
Sodium chloride
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Assertion: Oxygen is a compound.
Reason: Oxygen cannot be broken down into anything simpler.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Sodium chloride is used as table salt and for flavoring and preserving food.
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.
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
A compound has a definite ______.
Name the compounds used in fertilizers.
