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.

Answer 1

Answer:

(a) reactive

(b)good

(c)more

(d)metal salt + hydrogen gas

Answer 2

Answer:

Fill in the blanks:  

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

Explanation: Because it is never found on earth as free element.

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

Explanation:  Outer electrons of the atoms belong to a ‘cloud’ of localized electrons which also can carry kinetic energy through the lattice.

(c) Iron is more reactive than copper.  

Explanation: iron has higher oxidation potential than copper

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

Explanation: Non-oxidizing acids reacts with metals to produce hydrogen gas and soluble salt of metals.