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प्रश्न
Melting of wax is a change where a solid changes to a liquid state. Give one more such change which you observe in your surroundings
उत्तर
Melting of ice, melting of butter
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संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
Fill in the blank.
Melting of ice is a _______ change.
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Chlorine (Cl2) molecule is formed by ______ of electrons between two chlorine atoms.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Sodium chloride
Write the chemical reaction where the following changes are observed.
Gas is evolved
Explain,giving one example of the following chemical changes:
Reversible reaction
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Chemical changes are important in our day-to-day life. Give examples.
