Vocabulary of Mole Theory

___ is the amount produced from a reaction in reality. actual yield

Avogadro's Number ____ is a mole of representative particles of a substance (6.02 x ).

conversion factor ____ are used to change a sample's units from the original to something else (from known to unknown).

dimensional analysis ____ is a way to analyze and solve problems using the units, or dimensions, of the measurements.

In a reaction, the ___ has more than enough and will have some left over at the end. excess reactant

gram formula mass The ___ is equal to the total mass of all the atoms in one unit of a compound.

Law of Definite Proportions The _____ states that regardless of the amount of a compound, there is always the same amount of elements in proportion by mass.

In a reaction, the ___ is in short supply and will run out during the reaction - it is the reactant that determines how much product can be made. limiting reactant

molar mass The ___ is the amount of mass that one mole of an element or compound would have.

mole A ___ is also known as Avogadro's Number - it is a specific number of representative particles (6.02 x 1023) used to count and measure very small item, such as atoms.

mole roadmap We can use the ___ to help us decide which conversion factor to use when we are converting the units on samples in chemistry.

molecular formula A ____ is the letter and number form of our compound in simplest terms - like H20 or H2SO4. (AKA chemical formula)

percent composition ____ is the percentage of element in a compound by mass.

The ___ is the percent of actual yield versus theoretical yield. percent yield

___ means chemical - as in the chemicals in a reaction or chemical equation. reagent

representative unit _____ refers to the species present in a substance - usually atoms, molecules, or formula units (ions) - it’s the smallest we can get and still have the same properties of our sample.

scientific notation In _____, a number is written as the product of two numbers: a coefficient and a 10 raised to a power. Makes numbers easier to work with.

significant figures When determining ____, the "how" and "why" the data was collected should be considered as well as the rules - tells us how many places are important.

The ____ is the amount of product that you calculate a given reaction will make. theoretical yield