tronpipes coated with indoor
front and rust are the same substances
iel Condensation of steam is not a chemical
3 Full in the blanks in the following statements:
fa) When carbon dioxide is passed through limes
(b) The chemical name of baking soda is
lel Changes in which new substances are formed at
due to the formation of
(d) Changes in which only
are called physical changes.
changes
te) Two methods by which rusting of tron can be pre
properties of
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Answer:
(d) Changes in which only physical properties of a substance change are called physical changes. (e) Changes in which new substances are formed are called chemical changes
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