4.2 Flashcards
1
Q
Covalent compound
A
Non-metal + non-metal
2
Q
Ionic compound
A
Metal + non-metal
3
Q
How to get Mass number
A
Protons + neutrons
4
Q
How to get neutrons
A
Mass number - protons….
Round the mass number
5
Q
Rules for naming ionic compounds
A
- Non-metal always ends in “ide” suffix
- Metals always go first, non-metals second
- Metal uses its full name
6
Q
Rules for writing chemical formulas
A
- Identify charge for ions
- Determine if charges are balanced
- If charges are balanced, count # of ions for formula
- If charges are not balanced, then balance charges and go to #3
7
Q
Rules for naming ionic compounds with multitalented metals
A
- Metals always comes first
- Non-metals go second with “ide” suffix
- If metal is multitalented use Roman numerals
- Non-metals NEVER have Roman numerals
8
Q
Polyatomic ions
A
Groups of atoms covalently bonded together
Act as a single unit when forming compounds
9
Q
Rules for naming ionic compounds with polyatomic ions
A
- Positive ion named first
- Negative ion named 2nd
- Single elements follow previous naming system
- Poly ions use theirs and scientific name
10
Q
Mono
A
1
11
Q
Di
A
2
12
Q
Tri
A
3
13
Q
Tetra
A
4
14
Q
Penta
A
5
15
Q
Hexa
A
6
