The American Biology Teacher
By Edmund A. Marek, Connie Cruse Cowan and Ann M. L. Cavallo
“Students’ Misconceptions about Diffusion: How Can They Be Eliminated?”
Publisher: University of California Press on behalf of the National Association of Biology Teachers
Vol. 56, No. 2
Pp. pp. 74-77
1994
Students’ Misconceptions about Diffusion: How Can They Be Eliminated?
Type: Anecdotal
Data collection method: Survey, class discussion
Number of subjects, range: Large — 31 or more
Grade and age of subjects: 9th-12 grade — under 17-18 years
- Diffusion is where a chemical change takes place and changes water to blue dye.
- The molecules in the water accept the blue dye, so then, as the molecules in the water move, so does the dye.
- The cells of the water mix with the cells of the dye.
- The blue dye spreads through the water because water is semi-permeable, therefore the dye could spread throughout it.
- Water is the universal solvent and is in more mass than.
- The dye so from gravity and movement the dye would slowly make the water turn blue.