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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 6

State Four Important Characteristics of Compounds

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प्रश्न

State four important characteristics of compounds

टीपा लिहा
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उत्तर

Four Important Characteristics of Compounds are as follows:
1. When the compound is formed energy like heat, light, or electricity is either needed or produced.
2. A compound has properties entirely different from the properties of its constituents.
3. Change in weight takes place.
4. It cannot be separated into its constituents by simple physical means. 

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पाठ 4: Elements, Compounds, Symbols And Formulae - Exercise 1

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सेलिना Concise Chemistry [English] Class 6 ICSE
पाठ 4 Elements, Compounds, Symbols And Formulae
Exercise 1 | Q 9

संबंधित प्रश्‍न

Write true or false

The constituents of a mixture can only be separated by chemical means.


Name the elements present in Marble


What is the proportion of element present in the following compound?
CO2 


State the information obtained from the formula of a compound.


Write the molecular formulae of compound hydrogen sulphide.


State two characteristics of water which prove that it is a – compound.


Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to the term


What is the molecular formula of the following compound?

Hydrochloric acid


What is the molecular formula of the following compound?

Sulphuric acid


What is the molecular formula of the following compound?

Methane


State true of false. If false, give the correct statement.

Compounds and elements are pure substances.


Write the chemical formula and name the elements present in the following compounds.

  1. Sodium chloride
  2. Potassium hydroxide
  3. Carbon dioxide
  4. Calcium oxide
  5. Sulphur dioxide

Assertion: Air is a compound.

Reason: Air consists of carbon dioxide.


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

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.


A compound has a definite ______.


Name the compounds used in fertilizers.


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