Intro to Unit 9: Bonds

Intro to Unit 9
Chemical Bonds

By Brandy Coombs

Multiple Choice

What category of elements is shaded in the periodic table?

• Metalloids

• Metals

• Nonmetals

Multiple Choice

Which elements are colored red?

• nonmetals

• metals

• metalloids

Multiple Choice

What category of elements is shaded in the periodic table?

• Metals

• Nonmetals

• Metalloids

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

• Metal

• Nonmetal

• Metalloid

Multiple Choice

Valence electrons are the...

• Innermost electrons
• Middle electrons
• Outermost electrons
• Any electrons

Valence electrons are the outer electrons on an atom!

In the picture to the right there are 2 electrons

Multiple Choice

• 2
• 8
• 3
• 13

Multiple Choice

• 12
• 7
• 8
• 14

Multiple Choice

• 7
• 8
• 9
• 10

Lewis Dot Structures & Valence Electrons

• Group numbers can tell you how many valence electrons each element has.

• From group 1-18.

• Group 18 has the most valence electrons. They have 8!

Multiple Choice

Which group has the greatest number of valence electrons?

• 1

• 14

• 18

• 16

Multiple Choice

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

Multiple Choice

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

Multiple Choice

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

• 1

• 2

• 3

• 4

Drag and Drop

Add this to your notes:

Ions are formed when a neutral atom gains or loses ​

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to become charged.

Placeholder

have a positive charge.

​

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have a negative charge.

Drag these tiles and drop them in the correct blank above

Cations

Anions

electrons

Cation

○ Formed when a neutral atom loses electrons and becomes positively charged.

To help you remember:
cation
(the "t" in cation looks like a + sign)

Anion

○ Formed when a neutral atom gains electrons to become negatively charged

aNion (N → Negative)

Categorize

Options (8)

F^-

S^-2

Na⁺

Cl^-1

K⁺¹

Ca⁺²

O^2-

Mg²⁺

Sort the following ions into the category that best describes how they were formed from neutral atoms.

Gained 1 Electron

Gained 2 Electrons

Lost 1 Electron

Lost 2 Electrons