Advertisements
Advertisements
Question
Explain the term chemical reaction with special reference to reactants and products.
Advertisements
Solution
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
RELATED QUESTIONS
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
Give reason.
Acidic soil is treated with quick lime.
TRUE \ FALSE
Evaporation of water is a physical change. True or false ?
What are chemical reactions?
How is a strong electrolyte different from a weak electrolyte?
State the main characteristics of chemical reactions. Give at least one example in each case.
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Complete the table given below.
| Addition of dil. H2SO4 to zinc | Test for gas evolved |
Classify the following processes into physical or chemical changes:
- Beating of aluminium metal to make aluminium foil.
- Digestion of food.
- Cutting of a log of wood into pieces.
- Burning of crackers.
Rusting of iron is ______.
