____ is a non-metal existing in powder form and is bright yellow in colour.
Phosphorous
The non-metal which occurs as a yellow powder is _____
Fill in the following balnks with suitable words:
(a) Metals are ........................... conductors of heat and ............................
(b) Most non-metals are ........................... conductors of heat and ...........................
(c) Phosphorous is a very ........................... non-metal.
(d) Metals react with acids to produce ........................... gas.
(e) Iron is more ........................... than copper.
(f) Metals form ........................... oxides whereas non-metals form ........................... oxides.
(g) Sulphur forms ........................... oxide whereas magnesium forms ........................... oxide.
(h) A non-metal is used to make an antiseptic solution called tincture ...........................