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प्रश्न
Write word equations for two chemical reactions with the help of materials given in the box.
Air, copper sulphate, iron, vinegar, iron oxide, carbon dioxide, iron sulphate, copper, lime water, water
उत्तर
1. Iron + Air + Water → Iron oxide
2. Copper sulphate + Iron → Iron sulphate + Copper
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संबंधित प्रश्न
How do the following help in bringing about a chemical change?
pressure.
Fill in the blank.
The formation of gas bubbles in a liquid during a reaction is called ......................
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.
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)
The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
What is a chemical reaction?
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
The changes in which new substance with new chemical properties are formed are ______.
Rusting of Iron: undesirable change:: Dead plants turn into manure: ______.
______ is the chemical name of rust.
