1. Unit 5
STOICHIOMETRY

2. Stoichiometry: the branch of chemistry that deals with the calculations of masses of reactants and products involved in a chemical reaction

3. Mole Ratio: the ratio of moles of one substance compared to moles of another substance, provided by a balanced chemical equation
𝑀𝑜𝑙 𝐵 𝑀𝑜𝑙 𝐴

4. The “Mole Tunnel”: a process to solve stoichimetric calculations
The “Mole Tunnel”: a process to solve stoichimetric calculations. Grams A  Moles A  Moles B  Grams B

5. Theoretical Yield
The quantity of product obtained from the complete conversion of reactants to products in a chemical equation
Actual Yield (Experimental Yield) The actual quantity of product obtained in a chemical reaction.
Percent Yield
A measure of efficiency of a chemical reaction

6. Systematic Error
Errors that have an identifiable cause, that consistently produce results that are too high or too low.
Instrumental Error
Observational Error
Environmental Error
Theoretical Error

7. Instrumental Error
When an instrument itself is flawed and provides inaccurate readings

8. Observational Error
When an observer incorrectly reads a measurement

9. Environmental Error
Problems in the surroundings lead to inaccurate results

10. Theoretical Error
When experimental procedures, models, or equations are flawed, resulting in inaccurate results