Apologia chemistry module 7

Decomposition reaction

A reaction that changes a compound into its constituent elements

Formation reaction

A reaction that starts with 2 or more elements and produces 1 compound

Complete combustion reaction

A reaction in which O₂ is added to a compound containing carbon and hydrogen, producing CO₂ and H₂O

incomplete combustion

When a substance containing carbon and hydrogen burns in an environment where there is limited oxygen

Atomic number

The number that appears above the atomic symbol

atomic mass

The number that appears below the atomic symbol

What does AMU stand for?

Atomic Mass Units

The number above the atomic symbol is the atomic number. The number below is the atomic mass

These represent the number of protons and the weighted average mass of isotopes, respectively.

The atomic mass in amu will give the mass of 1 atom

The atomic mass in grams will give the mass of 1 mole of that atom

A molecule’s mass in amu will give the mass of 1  molecule

The molecules mass in grams will gave the mass of 1 mole of that molecule

What is Avogadro’s number

Represents the number of particles (atoms/molecules) in one mole of a substance 6.022 10²³