Bonding - Unit 3

Question 1

Define Valence Electrons

Answer 1

electrons in the outermost shell of an atom (they have the most energy)

Question 2

Lewis Dot Diagrams

Answer 2

represents the valance electrons of an atom

Question 3

How do you know how many Valence Electrons an element has?

Answer 3

Group (Columns) Number
#1 #2 #13 #14 #15 #16 #17 #18
IGNORE the 1s in the teen groups!

Question 4

Define Ion

Answer 4

an atom that has lost or gained electrons and now has an electric charge

Question 5

How does an atom become stable?

Answer 5

It has a full Valence Electron Shell (8 electrons)

Question 6

Cations

Answer 6

Positively Charged Ions

Question 7

Anions

Answer 7

Negatively Charged Ions

Question 8

Metals

Answer 8

= Cations

Question 9

Nonmetals

Answer 9

= Anions

Question 10

How to write the formula for an IONIC Compound

Answer 10

Swap and Drop Charges to make the subscripts

Question 11

How to write the formula for a COVALENT Compound

Answer 11

Write the Element Symbol from the name and use the prefix for the subscript

Question 12

Covalent Bonds

Answer 12

Share Electrons
(Between Nonmetals)

Question 13

Ionic Bonds

Answer 13

Give and Take Electrons
(Between Metal & Nonmetal)

Question 14

Naming Ionic Compounds

Answer 14

1. Write the NAME of the Element
2. Change the last 3 letters of the 2nd element to “ide”

Question 15

Naming Covalent Compounds

Answer 15

1. Use the subscript to determine PREFIX for each element
2. Write the name of the element w/the PREFIX
3. Change the last 3 letters of the 2nd element to “ide”
   *Exception-don’t use mono on the first element in the name

Question 16

Identifying if it is an IONIC or COVALENT Bond

Answer 16

Ask yourself…“Is the 1st element a metal?”
If the answer is “Yes, “ then it is IONIC

Question 17

Metals

Answer 17

have + charges
(count up by the group: +1 +2 +3)

Question 18

Nonmetals

Answer 18

have - charges
(count down by the group: 15= -1, 16 = -2, 17 = -3)