Unit 3: Ionic Bonding

Question 1

Molecular formula and empirical formula

Answer 1

• Shows the actual number of atoms of each element present in a molecule of the compound.
• Gives smallest ratio of atoms present, simplest type of formula.

Question 2

Ionic bonding

Answer 2

Metal transfers elections to nonmetal to make charged ions.
* Metal become cation (+), nonmetal becomes anion (-).

Question 3

Monatomic ion

Answer 3

Ions consisting of a single atom.

Question 4

What are binary ionic compounds and their properties?

Answer 4

Composed of 2 different elements (metal and nonmetal).
All solid.
No molecules exist.

Question 5

Type 1 metal charges

Answer 5

Alkili metals (1A): +1
Alikili earth metals (2A): +2
Group 3A: Al3+

Question 6

Non-metal charges

Answer 6

Halogens (7A): -1
Group 6A: -2
Group 5A: -3

Question 7

Hydrogen and hydroxyl in an ionic compound

Answer 7

Acts as a nonmetal, therefore takes name of anion “hydride”.
Takes on the name hydroxide.

Question 8

Polyatomic ions

Answer 8

Have 2 or more atoms and net charge

Question 9

Hydrates

Answer 9

Ionic compounds that have a number of water molecules associated with each formula unit.
Number prefix + hydrate

Question 10

Formula mass

Answer 10

Mass of a unit of an ionic compound
Atomic masses are used.