Which of the following liquids will have the lowest freezing point?
a. aqueous lif (0.65 m)
b. pure h2o
c. aqueous sucrose (0.75 m)
d. aqueous cdi2(0.39 m)
e: aqueous glucose (0.75 m)

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.