Advertisements
Advertisements
प्रश्न
Explain the term chemical reaction with special reference to reactants and products.
Advertisements
उत्तर
A chemical reaction is a transformation in which matter transforms into one or more new compounds. Reactants are substances or substances that participate in a chemical reaction; these are changed into products, which are one or more new compounds.
APPEARS IN
संबंधित प्रश्न
What are oxides ?
What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.
Fill in the blank
A new substance is always formed in a _______ change.
Define chemical reaction.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
_____ is the basic material to manufacture urea.
Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.
Beating an egg to make a cake is a ______.
Match the following:
| Column I | Column II | ||
| 1. | Burning of coal | a. | Rusting |
| 2. | Painting of a surface | b. | Evaporation |
| 3. | Dipping iron in the water | c. | Chemical change |
| 4. | Salt from seawater | d. | Prevention of rusting |
