Stoichiometry And Chemical Reactions Flashcards
Chemical reaction
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
Coefficients
Numbers in front of a compound that tell you how many moles of the compound you have
Reactant
The starting materials, on the left
Products
The ending materials, on the right
Synthesis
The combining of 2 or more substances
Decomposition
When one substance breaks down into 2 or more substances
Single replacement
When a single element replaces an element in a compound creating a new compound that displaces the other one
AB + C –> AC + B
Double replacement
Two elements from 2 different compounds switch places to form 2 new compounds
AB + CD –> AD +BC
Precipitate
The cause of an event to happen suddenly
Combustion
When hydrocarbon and oxygen react to form water and carbon dioxide
Aqueous
The substance has been dissolved in water
Diatomic elements
Elements that pair up together
Mole
A unit of measurement
1 mole = 6.02x10^23
Molar mass
The mass of 1 mile of a substance
Mole ratio
A mathematical expression that shows the relative amounts of two items involved in a chemical change
