Mole/Stoichiometry Vocbulary

1

100

The amount of a substance that contains 6.02 x 10²³ representative particles of that substance.

What is a mole?

200

1 mole gas at STP= 22.4 L

Molar Volume

300

Undergoes change in a chemical reaction 

Reactant 

400

V₁/n₁ = V₂/n₂

Avogardo's Hypothesis

500

Double Points!

The substance is totally consumed when the chemical reaction is complete, and then remains when a reaction stops when totally consumed.

Limiting/Excess Reactant 

2

100

Mg=24.31 g/mol

What is molar mass?

200

Water is an example of a polar...

Molecule

300

equals to 1/12 the mass of a carbon-12 atom 

Atomic Mass Unit 

400

A substance that increases the rate of reaction by lowering the activation-energy barrier; the catalyst is not used up in the reaction.

Catalyst

500

The smallest yield of product.

Theoretical Yield

3

100

Usually atoms, molecules, or ions

Representative Particles

200

 Chemical formula that shows the kinds of numbers of atoms present in a molecule of a compound.

Molecular Formula

300

2 mol H₂ : 1 mol O

Mole Ratio

400

the percent by mass of each element in a compound

Percent Composition 

500

The amount of product that forms when a reaction is carried in the laboratory.

Actual Yield

4

100

reactants --> product

Chemical Reaction

200

 6.02 x 10²³  

Avogardo's Number 

300

A substance produced in a chemical reaction.

Product

400

Double Points!

They are sufficient to react with each other, first used up in a chemical reaction and remains after the reaction.

Excess/Limiting Reagent 

500

It is calculated to be the experimental yield divided by theoretical yield multiplied by 100%

Percent Yield

5

100

The smallest particle of an element that retains its identity in a chemical reaction.

Atom

200

Standard Temp is 0 degrees Celsius 

 or 1 atmosphere (atm)

STP (Standard Temperature Pressure)

300

 Mg (24.31 g)+ C (12.01 g) +O ₃(16.00 g) = 84.32 g

Formula Mass

400

A specific number of water molecules bound to each formula unit.

Hydrate

500

A formula with the lowest whole number ratio of elements in a compound

Empirical Formula