PDF chapter test TRY NOW
Answer the following questions in a few sentences:
1. Classify the substances given in figure into elements and compounds.
: Cu, Zn , F2, O2, Hg, Diamond
: CaCO3, H2O
2. Which of the following are not compounds?
(a). Chlorine gas
(b). Potassium chloride
(c). Iron
(d). Iron sulphide
(e). Aluminium
(f). Iodine
(g). Carbon
(h). Carbon monoxide
(i). Sulphur powder
(a). Chlorine gas
(b). Potassium chloride
(c). Iron
(d). Iron sulphide
(e). Aluminium
(f). Iodine
(g). Carbon
(h). Carbon monoxide
(i). Sulphur powder
, Iron, Aluminium, Iodine, Carbon, and are not compounds.
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