Chapter 7 Flashcards
What charge do Aluminum (Al) and Gallium (Ga) have?
3+
What charge do Zinc (Zn) and Cadmium (Cd) have?
2+
What charge does Silver (Ag) have?
1+
What is the root term for 1?
mono
What is the root term for 2?
di
What is the root term for 3?
tri
What is the root term for 4?
What is the root term for 4?
tetra
What is the root term for 5?
penta
What is the root term for 6?
hexa
What is the root term for 7?
hepta
What is the root term for 8?
octa
What is the root term for 9?
nona
What is the root term for 10?
deca
molar mass
the mass in grams of one mole of a compound
percent composition
the percent by mass of each element in a compound
empirical formula
the lowest whole number ration of atoms in a compound
molecular formula
the true number of atoms of each element in the formula of a compound (actual formula)
How do you find the empirical formula?
- convert % to grams
- convert grams to moles
- divide each of the values of moles by the smallest value
- using ratios, write the empirical formula
How do you find the molecular formula?
- calculate the empirical formula
- divide the molecular formula mass by the empirical formula mass
- multiply the empirical formula by that number
- write the molecular formula
If the formula starts with a metal or cation, it is ______
ionic
If the formula does not start with a metal or cation, it is _______
covalent
A ionic bond needs a Roman numeral if it is _________ or _________
a transition metal, under the stairs
If a covalent bond starts with an “H”, it is an ______
acid
