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प्रश्न
Define Compounds
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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
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संबंधित प्रश्न
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
Name the elements which form water.
How will you justify that water is a compound?
What is the proportion of element present in the following compound?
H2O
What is the proportion of element present in the following compound?
CaO
Name two compounds which dissolve in water.
State the information obtained from the formula of a compound.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound carbon monoxide
Explain the term compounds.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
What is the molecular formula of the following compound?
Sulphuric acid
What is the molecular formula of the following compound?
glucose
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Reason out
Sand is also known as silica.
When does the pressure of the gas increase?
Name the compounds used in fertilizers.
