Chapter 3 - Stoichiometry

Haber process

________: a very important fertilizer itself and a starting material for other fertilizers made by combining nitrogen.

Lord Joseph Lister

Although Fleming is commonly given credit for the discovery of penicillin, there is good evidence that penicillium mold extracts were used in the nineteenth century by ________ to cure infections 3.6 Determining the Formula of a Compound.

Objects

________ do not need to have identical masses to be counted by weighing.

component elements

It is often determined by taking a weighted sample of the compound and either decomposing it into its ________ or reacting it to oxygen to produce substances.

Methane

________ is a molecular compound.

Formula unit

________: Ionic compounds that do not contain molecules 3.5 Percent Composition of Compounds.

Reactants

________ and products must occur in numbers that give the same number of each type of atom among both the ________ and products.

Carvone

________ is a substance that occurs in two forms having different arrangements of the atoms but the same molecular formula and mass.

Molecular formula

________ (empirical formula): where n is an integer.

chemical reaction

In a(n) ________, atoms are neither created nor destroyed.

stoichiometry calculation

In any ________ involving a chemical reaction, it is essential to determine which reactant is limiting so as to calculate correctly the amounts of products that will be formed.

chemical equation

The ________ for a reaction gives two important types of information: the nature of the reactants and products and the relative numbers of each.

positive ions

They knock electrons off the atoms or molecules being analyzed and charge them into ________.

Mole

________: A unit of measure that has been established for use in counting atoms.