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प्रश्न
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)
Rusting of iron is a ______ chemical change.
उत्तर
Rusting of iron is a slow chemical change.
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
light.
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
Fill in the blank:
In some chemical reactions an insoluble ________ is formed when two solutions are mixed.
State what you would observe when the following substance is heated in a glass test tube red lead.
What do you observe? When
Barium chloride is added to sodium sulphate solution
State the following reaction represent oxidation or reduction.
\[\ce{Cl- ->Cl}\]
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
______ is a natural indicator.
A chemical change may involve –
