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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)
The white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.
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उत्तर
The white particles of baking soda disappear when put in lemon juice. This means that it is a chemical change.
संबंधित प्रश्न
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Water
Write the chemical reaction where the following changes are observed.
Precipitate is formed
Distinguish by heating the following in dry test tubs.
Copper Sulphate and copper carbonate
Give a word equation for the following reaction.
Two solids which combine on heating, to give a liquid.
Name the following:
The type of change physical or chemical involved – ‘during respiration in human beings’.
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.
True or False. If false, give the correct answer.
Taking a glass of water and freezing it by placing it in the freezer is a chemical change.
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.
(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
What is the difference between reactants and products?
