Ion Formation

Chapter 3: Ionic Compounds and

Metals

Section 1: Ion Formation

Open Ended

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Multiple Choice

Chemical bond is ...

• the physical mixing of two different atoms.

• the force that holds two atoms together

• the energy used up when two atoms combined.

• the temperature that changes the phase of matter.

Multiple Choice

Each group in the periodic table has its own characteristic properties based on the number of

• neutrons

• valence electrons

• protons

• ions

A chemical bond is the force that holds two atoms together.
What is chemical bond?

chemical bond

Chemical bonds form by the attraction between the positive nucleus of one atom and the
negative electrons of another atom.

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

Multiple Choice

Why do elements bond?

• To be friends

• To create a new element

• To become stable

1. Define chemical bonds.
2. Introduce Cation and Anion.
3. Describe Cation and Anion.

Key terms:

Ion Formation

Chemical Bonds ةيئايميكلا ةطبارلا
Cationنويتاكلا
Anion نوينلاا

Multiple Choice

Which best describes a valence electron?

• an inner electron that participates in chemical bonding

• an outermost electron that participates in chemical bonding

• an inner electron that does not participate in chemical bonding

• an outermost electron that does not participate in chemical bonding

The ion could be:

Cation

Anion

Loses electrons

Accept electrons

It has a negative charge

Metals form Cation

Non-metals form Anion

To achieve Octet Rule by having 8 electrons in

their outer shell and become stable

It has a positive charge

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Slide 2 – Vid. 3

when atom accept

electron, it becomes.…..

and when atom lose

electron, it becomes..…

Na

Na+

F

F-

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

Check Point

• What is chemical bond?

• Metals form ………

• Non-metals form ………

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

Multiple Choice

When an atom loses an electron, it becomes a

• positive ion

• negative ion

• neutral ion

• neutral atom

Multiple Choice

What is the greatest number of valence electrons an atom can have?

• 2

• 3

• 8

• 12

Multiple Choice

An ionic bond is the attraction between

• similarly charged ions

• oppositely charged ions

• neutral ions

• neutral atoms

Multiple Choice

Which group of elements is the most stable?

• metals

• metalloids

• nonmetals

• noble gases

Multiple Choice

Atoms are most stable when their outer shell is full or complete.

• True

• False

Positive Ion Formation

Noble Gas

To achieve Octet Rule by having 8 electrons in

their outer shell and become stable

Sodium Cation (Na+) 1s22s22p6

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

Negative Ion Formation

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

To achieve Octet Rule by having 8 electrons in

their outer shell and become stable

Multiple Choice

What part of an atom is involved in chemical bonding?

• proton

• neutron

• electron

Multiple Choice

Atoms gain or lose electrons to become stable by satisfying this rule.

• Ionic law

• Lewis structure rule

• Periodic law

• octet rule

Multiple Choice

Where are metals located on the periodic table?

• Blue

• Green

• Red

Cl need 1 electron

1s22s22p6 3s23p5

Cl-

Na has extra electron
1s22s22p63s1

Na+

Chlorine atom [Cl]

Sodium atom [Na]

Non-metal

metal

1s22s22p6

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Slide 3 - vid. 2

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Slide 4 – Vid. 1

1s22s22p6 3s23p6

- Define chemical bonds.
- Introduce Cation and Anion.
- Describe Cation and Anion.

Decide which is better to reach stability by either losing or gaining electron for:

1- [F9]: 1s22s22p5

2- [K19]: 1s22s22p6 3s23p6 4s1

❑ Oxygen gains two electrons to form?

A. Cation

B. Anion

❑ Elements with a full octet have which configuration?

A. ionic configuration

B. halogen configuration

C. noble gas configuration

D. transition metal configuration

PLENARY

Critical question

Cl need 1 electron

1s22s22p6 3s23p5

Cl-

Chlorine atom [Cl17]
Non-metal

1s22s22p6 3s23p6

Na has extra electron
1s22s22p63s1

Na+
Sodium atom [Na11]
metal

1s22s22p6

How many

protons do we

have ?