The following observations are about substance X.

(i) Its freezing point is below 0°C.
(ii) Evaporation occurs at room temperature.
(iii) When connected in an electric circuit, charge is conducted.

What is most likely substance X?

A. water that contains salt crystals
B. solidified carbon dioxide
C. a mixture of iron and copper
D. a sample of liquid nitrogen

Question

The following observations are about substance X.

(i)   Its freezing point is below 0°C.
(ii)  Evaporation occurs at room temperature.
(iii) When connected in an electric circuit, charge is conducted.

What is most likely substance X?

A.  water that contains salt crystals
B.  solidified carbon dioxide
C.  a mixture of iron and copper
D.  a sample of liquid nitrogen

jfraser · Answer

pick each option one at a time and see if any of those choices fails one of the 3 tests