1. Representations of Processes
Main Concept:
Physical and chemical processes can be depicted symbolically; when this is done, the illustration must conserve all atoms of all types.

2. Representations of Processes Ways to Represent Change1.
example(s): 2.
Conservation of Matter
What it means and how we apply it

3. - Conservation of mass: in any change, mass is always conserved
- Mass is neither created nor destroyed; missing mass can be accounted for somehow

4. - Various types of representations can show how matter is conserved during chemical and physical processes
Symbolic representations
Particulate drawings

5. - Conservation of matter allows us to do stoichiometry
- Conservation of atoms allow us to:
- calculate product masses given reactant masses
- calculate reactant masses given product masses

6. - conservation of atoms helps us understand many chemical processes on the macroscopic scale
- Examples include how atoms cycle through land, water, atmosphere, and living organisms.

7. carbon dioxide
cellulose
glucose
hydrocarbons
carbon dioxide
carbonates
bicarbonates

8. nitrogen
DNA, proteins
DNA, proteins
ammonium
nitrates
nitrites