JAMB - Chemistry (1985 - No. 39)
In the experiment, which of the following observations would suggest that a solid sample is a mixture? The
solid can be ground to a fine powder
density of the solid is 2.25gdm-3
solid begins to melt at 573k but is not completely melted until 648k
solid absorbs moisture from the atmosphere and turns into liquid
solid melts at 300k