1.
2.
3.
Why does the colour of copper sulphate solution change when
an iron nail is dipped in it?
Give an example of a double displacement reaction other than
the one given in Activity 1.10.
Identify the substances that are oxidised and the substances
that are reduced in the following reactions.
(i) 4Na(s) + O2(g) → 2NaO(s)
(i) CuO(s) + H2O + Cu(s) + H2O(l)
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Explanation:
Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.
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