Naming Compounds and Writing Formulas

1. Naming Compounds and Writing Formulas Chapter 6 Section 3 Pg. 170-175

2. Describing Ionic Compounds • The name of an _____ compound must distinguish the compound from other ionic compounds containing the same elements. The _______ of an ionic compound describes the _____ of the ions in the compound.

3. Describing Ionic Compounds • Binary Ionic Compounds • A compound made from only __ elements is a binary compound • Bi- means 2 • The names have a predictable patter: • The name of the ______ (+) followed by the name of the anion (-) • Name for cation is the name of the _____ without any change • Name for the _____ uses part of the name of the nonmetal with the suffix –ide

4. Describing Ionic Compounds • Binary Ionic Compounds

5. Describing Ionic Compounds • Metals with Multiple Ions • ______ metals, alkaline earth metals, and aluminum form ions with ________ charges equal to the group number • Potassium ion is K+ • Aluminum ion is Al3+ • Many _________ metals form more than one type of ion • When a metal forms more than one ion, the name of the ion contains a _____ numeral to indicate the charge on the ion

6. Describing Ionic Compounds • Metals with Multiple Ions

7. Describing Ionic Compounds • Polyatomic Ions • A __________ bonded group of atoms that has a positive or negative charge and acts as a unit (one) • Poly- means “____” • most simple polyatomic ions are anions

8. Describing Ionic Compounds • Polyatomic Ions • 1 Nitrogen and 4 Hydrogen atoms • Called an ________ ion • Joined by covalent bonds • ________ charge because: N has 7 protons, each H atom has 1 proton= 11 total; but the group only has 10 electrons to _______ the charge on the protons – 8 v.e. and N 2 inner electrons

9. Describing Ionic Compounds • Polyatomic Ions

10. Describing Ionic Compounds • Writing Formulas for Ionic Compounds • IF you know the name of an _____ compound, you can write its formula • Place the symbol of the ______ first, followed by the symbol of the anion • Use subscripts to show the _____ of the ions in the compound, all compounds are neutral • Total charges on the cations and anions must add up to ____

11. Practice Writing Formulas for Ionic Compounds

12. Describing Molecular Compounds • The name and formula of a molecular compound ________ the type and number of atoms in a molecule of the compound • Naming Molecular Compounds • General rule: the most ________ element appears first in the name (farther left on table), if both elements are in the same group, the more metallic element is closer to the bottom of the _____ • The name of the second element is changed to ___ in the suffix -ide

13. Describing Molecular Compounds • Prefixes for naming compounds

14. Practice Naming Molecular Compounds

15. Describing Molecular Compounds • Writing Molecular Formulas • Write the _______ for the elements in the _____ the elements appear in the name • Prefixes indicate the ______ of atoms of each element in the molecule • Appear as subscripts in formula • If there is no ______ for an element in the name, there is only one atom of that element in the ________

16. Practice Writing Molecular Formulas • Formula for diphosphorustetrafluoride • Phosphorus- P, di=2 • Fluoride- F, tetra=4 ______