हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Differentiate Between In Chemical Reaction and Chemical Equation.

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प्रश्न

Differentiate between in Chemical reaction and chemical equation.

अंतर स्पष्ट करें
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उत्तर

 Chemical reaction  Chemical Equation
Any chemical change in matter which involves its transformation into one or more new substances is called a chemical reaction. A chemical equation is the symbolic representation of a chemical reaction using the symbols and the formula of the substances involved in the reaction.
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अध्याय 5: Language of Chemistry - Exercise

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एस पी सिंग Concise Chemistry [English] Class 7 ICSE
अध्याय 5 Language of Chemistry
Exercise | Q 3.2

संबंधित प्रश्न

Write the missing reactants and products and balance the equations.

NaOH + ............... `→` NaCI + ...................


TRUE \ FALSE

Weak electrolytes dissociate partially in their aqueous or fused state.


Name the gases which turn moist red litmus blue.


State the original colour of the following substance and colour of residue obtained after heating.

Copper carbonate


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Give a chemical test to distinguish between the following gases. 

H2 and CO2


Distinguish by heating the following in dry test tubs.

Zinc nitrate and copper nitrate.


Explain the term ‘chemical reaction’ with special reference to – ‘reactants’ and ‘products’.


Select the correct answer for the following options:

The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.


Explain the term chemical reaction with special reference to reactants and products.


What happens when cane sugar is strongly heated? Mention any two changes in it.


Can a nickel spatula be used to stir copper sulphate solution? Justify your answer.


______ is a natural indicator.


Classify the following processes into physical or chemical changes:

  1. Beating of aluminium metal to make aluminium foil.
  2. Digestion of food.
  3. Cutting of a log of wood into pieces.
  4. Burning of crackers.

Vanaspati is obtained from vegetable oils by the addition of ______ to the oils.


The chemical formula of rust is ______.


Write the equation for the process of formation of rust.


How would you show that the settling of curd is a chemical change?


Write the effects of chemical reactions.


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