Students will be assessed on completing and displaying their painting and on submitting a lab report, consisting of a sentence description and diagram for each reference crystal and each crystal in the painting and a paragraph summarizing their observations and conclusions. This will count as a full lab grade. Content of the painting itself will not be graded. The teacher should monitor the work in progress to insure that gang signs and other unsuitable content are not used, but should not otherwise censor the work. Students will also be assessed on the material on the next test.
Different substances produce different crystals.
This means that substances can be identified by their crystals. One way to form crystals is through the evaporation of a saturated solution. The paint does not alter the crystal shape or color. It did coat the outside of the crystals and act as a glue to help the crystals stick to the paper. All of the solids used in the painting dissolve in water and therefore will not normally be found in nature.