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.
(a)Phosphorus is a very __reactive__non-metal.
(b)Metals are __good__ conductors of heat and __electricity__.
(c)Iron is __more__reactive than copper.
(d)Metals react with acids to produce __hydrogen__gas.