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Grade 1110 grade science

Give two examples each for chemical reactions which are characterised by -
(i) Change in colour
(ii) Change in state
Write the the chemical equations for each of the example.

Profile image of Sona Sheril Antony
11 Years agoGrade 11
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1 Answer

Profile image of Ruchi Shaw
11 Years ago
Dear student ,
Your answer is as follows :

1) Change in colour : Rusting of iron results in the change of iron from silver to reddish brown.
4Fe(III) + 3O2 = 2Fe2(III)O3

2) Change in state : Changing of (solid) ice into (liquid) water upon heating.
Ice (solid) = water (liquid)

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