Writing/Naming Compounds

Question 1

Binary Compounds

Answer 1

Made of 2 elements
Ionic compound = Metal + Non-metal
Covalent compound = Non-metal + Non-metal

Question 2

Naming Ionic Compounds

Answer 2

1. Name the metal (first element)
2. Change the nonmetal to -ide
3. IF the metal has multiple charges, use a roman numeral for the charge of the metal
4. DO NOT change the name of polyatomic ions

Question 3

Naming Covalent Ions

Answer 3

1. Name the first non-metal
2. Change the second non-metal to -ide
3. Use prefixes for the subscripts

Mon/Mono = 1 Di = 2 Tri = 3 Tetra = 4 Penta = 5 Hex = 6

4. NEVER use Mon/Mono with the first non-metal

Question 4

Writing Covalent Formulas

Answer 4

1. Follow prefixes

Mon/Mono = 1 Di = 2 Tri = 3 Tetra = 4 Penta = 5 Hexa = 6

Question 5

Writing Ionic Compounds

Answer 5

1. Find the charges (metal = positive, non-metal = negative)
2. Use subscripts to make the net charge 0
3. Roman numeral is the positive charge of the metal
4. Use parentheses for polyatomic atoms when needed