Grade Level: 6th – 8th grade Subject Matter: Life Science
National Standards: NS.5-8.1, NS.5-8.3 Red, blue and purple
flowers with large petals, one of each color for each student.
Red roses and purple or blue irises are ideal. Ziploc bags, one
for each student Hammers, one for each pair of students Clear
plastic cups, four for each student Teaspoons, one for each
student Empty white Styrofoam egg cartons, one for each student
Droppers, one for each pair of students Bottle of vinegar pH
scale: a scale used to measure the acidity or basicity of a
solution. Acid: a chemical compound that usually tastes sour and
measures less than 7 on the pH scale. Base: a chemical compound
that usually tastes bitter and measures between 8 and 14 on the
pH scale. Hydrogen: a colorless gas. Molecule: the smallest unit
of a substance that can exist independently. Prep: Make the
baking soda solution in advance of class by mixing two cups of
water with one teaspoon of baking soda. Place solution in small
plastic cups, one cup of so