Question

Fill in the blanks.

(a) Phosphorus is a very _________non-metal.

(b) Metals are _________ conductors of heat and ____________ .

(c) Iron is ____________reactive than copper.

(d) Metals react with acids to produce ____________ gas.
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Answer 1

Answer:

a. reactive

b. good, electricity

c. less

d. carbon dioxide

Answer 2

Answer:

(a) Phosphorus is a very reactive non-metal.

(b) Metals are good conductors of heat and electricity.

(c) Iron is more reactive than copper.

Explanation :- Copper doesn't displace iron from its solution since it is less reactive than iron. A more reactive metal displaces a less reactive metal from its solution.

(d) Metals react with acid to produce hydrogen gas.

Explanation :- Metals readily react with acid and produce hydrogen gas which burns with a pup sound. Metals are placed above hydrogen is reactivity series and displace it during reaction with an acid.