- Student instructions
- 18 red beads to represent oxygen atoms
- 12 white beads to represent hydrogen atoms
- 6 black beads to represent carbon atoms
- Photosynthesis and Cellular Respiration sheet
- “Energy” diagram
- Sheet of review cards
$11.95 – $73.95
MS-PS1-5. Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Developing and Using Models - Develop a model to describe unobservable mechanisms.
PS1.B: Chemical Reactions - Substances react chemically in characteristic ways. In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants.
Energy and Matter - Matter is conserved because atoms are conserved in physical and chemical processes.