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प्रश्न
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
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उत्तर
The substances formed as a result of a chemical reaction are called products .
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Formation of manure from leaves is a physical change.
Complete and balance the following chemical equations
Na + H2 O →
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ______ reaction.
Write the chemical reaction where the following changes are observed.
Colour change is noticed
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
What is a chemical reaction?
Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
Give a balanced equation for the conversion of an ammonium salt to a basic gas.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Zinc carbonate.
Write some materials prepared by chemical changes.
When magnesium is burnt in the air, a new substance is formed which is ______.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
Magnesium + oxygen → magnesium oxide.
2Mg + O2 → 2Mg O
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
______ is the chemical name of limestone.
Write the effects of chemical reactions.
