National Standards for Grade Levels 5-8
 
Meeting Molecules was designed to help students differentiate between physical and chemical changes using a hands-on approach. Students model the states of matter: a solid, a liquid, and a gas; and the phase changes between them. They learn the difference between atoms and molecules. A great introduction to physical science and chemistry which bridges the use of common household ingredients and the use of laboratory chemicals. Students investigate molecular motion in liquids, evidence of chemical change, and the effects of changing variables within a chemical reaction. Allow one hour for each of the three experiments. Designed for up to 30 students. Required, not included: hot plate, pot holders, glass beaker, various small containers, red and black construction paper, copy paper, citrus juices, milk, ice, matches, chemical splash goggles, and gloves. May be used as a stand-alone kit or as a companion kit to follow 1-132, Matter for Minors.