Advertisements
Advertisements
Question
Give an example of the following chemical change.
Two solids combine to form a liquid
Advertisements
Solution
C(s) + 2S(g) → CS2(l)
APPEARS IN
RELATED QUESTIONS
Give reason.
Acidic soil is treated with quick lime.
Explain the following reaction with one suitable example of Double decomposition reaction.
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)
A colourless solution of calcium hydroxide in a test tube turns ______ on blowing in it through a blow tube for some time.
Write the chemical reaction where the following changes are observed.
Colour change is noticed
Give reason for the following:
Blue solution of copper sulphate changes to green when a piece of iron is added to this solution.
Give one example electrochemical reaction.
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
Higher order Thinking question
Peeled and unpeeled banana does not look the same. Does that mean peeling banana is a chemical change?
Water boiling into water vapour is an example of chemical change.
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
