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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.
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उत्तर
Rusting of iron is a slow chemical change.
संबंधित प्रश्न
How do the following help in bringing about a chemical change?
catalyst .
Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.
\[\ce{NH3_{(g)} + HCl_{(g)} -> NH4Cl_{(s)}}\]
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
Define the following term:
Precipitate
Give an example of a reaction where the following are involved
Pressure
Give an example of the following chemical changes.
A reaction where colour change is noticed.
Name: Two carbonates do not produce carbon dioxide on heating.
Distinguish by heating the following in dry test tubs.
Zinc carbonate, Copper carbonate and lead carbonate.
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
Write the effects of chemical reactions.
