PDF chapter test TRY NOW

Write brief answers to the following questions:
  
1. Classify the substances given in figure into elements and compounds.
YCIND_221108_4650_matter_around_us_1.png
 
: 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
 
, Iron, Aluminium, Iodine, Carbon, and  are not compounds.