Which of these is an example of qualitative observation?

A. the atomic number of ironnis 26

B. iron nails are attracted to the magnet

C. iron is located in the fourth period of the periodic table

D. two-thirds of iron is located in the body is found in hemoglobin

Iron nails are attracted to the magnet

B. Iron nails are attracted to the magnet

Explanation:

A qualitative observation is an observation that gives qualitative data - as opposed to quantitative-. This means that the data is non-numerical (or unquantifiable). In other words it could be said that a qualitative observation can be reached when you don't count anything. In chemistry qualitative observations can be made of properties such as color, smell, or whether or not a species is attracted to a magnet.