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 to acids to produce hydrogen gas.