3.3 - The Wheel Model of Mole Conversions Flashcards
Why can’t we convert from mass to number of particles in one step?
Because we don’t know their relationship, therefore there is no conversion factor.
What are the pros and cons of breaking down a multi-step conversion into multiple steps?
Pros: It can be easier to sort out what you know vs what you need.
Cons: it is difficult to track sig figs.
What additional step do compounds add to conversion factors?
You need to determine the atoms making up the compound, and use the number of atoms as your conversion factor.
What do you call the calculation of relative quantities between two substances, be they elements within a compound of some mix of reactants and products in a chemical reaction?
Stoichiometry.
What are the two types of stoichiometry?
Composition stoichiometry and Reaction stoichiometry.
What do you call the stoichiometry between elements in a compound or between the compound and one of it’s constituents?
Composition stoichiometry.
What do you call the stoichiometry between reactants/products in a chemical reaction?
Reaction stoichiometry.
How do you find the stoichiometry of two substances?
By comparing how many moles in each, and the ratio between them (mole ratio).
What do you call the ratio between the moles of two substances, from either a chemical formula or balanced chemical equation?
Mole ratio.
What is the simplest stoichiometry conversion?
moles of substance A to moles of substance B.
What is another word for the stoichiometry conversion factor?
Mole ratio.
