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Answer 1

Answer :-

(7)

• CuSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq) is an example of displacement reaction.
• A displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.

(8)

1. Appearance $\\ \sf \red{Metal} - shiny \: \: \: \: \: \\ \sf \red{non-metal} - dull$
2. conduction of heat $\sf \red{Metal} - Good \: \: \: \: \: \\ \sf \red{non-metal} - poor(they \: \: are\: \: insulator)$
3. Malleability $\sf \red{Metal} - Malleable (they\: \: bend \: \: without \: \: breaking) \: \: \: \: \: \\ \sf \red{non-metal} -Brittle (they \: \: break \: \: or\: \: shatter\: \: when \: \: hammered)$
4. Ductility $\sf \red{Metal} - they \: \: can\: \: be\: \: easily \: \: drawn \: \: into \: \: wires. \: \: \: \: \: \\ \sf \red{non-metal} - Ductility \: \: property \: \: is \: \: not \: \: seen \: \: in \: \: non-metals$

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Answer 2

CuSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq) is an example of displacement reaction.

A displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.

(8)

Appearance \begin{gathered}\\ \sf \red{Metal} - shiny \: \: \: \: \: \\ \sf \red{non-metal} - dull \\ \end{gathered}

Metal−shiny

non−metal−dull

conduction of heat \begin{gathered} \sf \red{Metal} - Good \: \: \: \: \: \\ \sf \red{non-metal} - poor(they \: \: are\: \: insulator) \\\end{gathered}

Metal−Good

non−metal−poor(theyareinsulator)

Malleability \begin{gathered} \sf \red{Metal} - Malleable (they\: \: bend \: \: without \: \: breaking) \: \: \: \: \: \\ \sf \red{non-metal} -Brittle (they \: \: break \: \: or\: \: shatter\: \: when \: \: hammered) \\ \end{gathered}

Metal−Malleable(theybendwithoutbreaking)

non−metal−Brittle(theybreakorshatterwhenhammered)

Ductility \begin{gathered} \sf \red{Metal} - they \: \: can\: \: be\: \: easily \: \: drawn \: \: into \: \: wires. \: \: \: \: \: \\ \sf \red{non-metal} - Ductility \: \: property \: \: is \: \: not \: \: seen \: \: in \: \: non-metals \\ \end{gathered}

Metal−theycanbeeasilydrawnintowires.

non−metal−Ductilitypropertyisnotseeninnon−metals

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