AP Chemistry: Atoms, Molecules, & Ions Flashcards
Law of Conservation of Mass
Mass is neither created nor destroyed
Law of Definite Proportions
A given compound always contains exactly the same proportions of elements by mass
Law of Multiple Proportions
When two elements combine to form a series of compounds, the ratios of the masses of the second element that combine with the ratio of the first element can always be reduced to small whole numbers
Antimony’s original name
Stibium
Copper’s original name
Cuprum
Iron’s original name
Ferrum
Lead’s original name
Plumbium
Mercury’s original name
Hydrargyrum
Potassium’s original name
Kalium
Silver’s original name
Argentum
Sodium’s original name
Natrium
Tin’s original name
Stannum
Tungsten’s original name
Wolfram
Periods
Horizontal rows
Groups or families
Vertical columns
Silver’s oxidation number
1+
Zinc’s oxidation number
2+
Cadmium’s oxidation number
2+
Water
H2O
Ammonia
NH3
Hydrazine
N2H4
Diamidogen
N2H4
Phosphine
PH3
Nitric oxide
NO
Nitrous oxide
N2O
