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IONS-MADE-SIMPLE

AN INTRODUCTION

TO THE CREATION OF

CATIONSANDANIONS

Materials needed:

-

Cup of beans beans of your choice-1 cup per student)

-1 Electron place mat preferably one per student;

included here)

-Ion Demonstration answer sheet included here)

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ELECRON PLACE- MAT

NUCLEUS

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Lets Demonstrate How an Ion Forms!!!

Define Ionic bond: __________________________________________________________________________

Key point 1:

Key point 2:

Define Ions: ___________________________________________________________________Examples: ____________________

ACTIVITY:

The Beans in the cups on each table represent electrons. As a group, you will demonstrate how the electronsare transferred from one atom to another atom and become positive or negative ions.

Octet rule states that every atom wants a fu ll valence electron shellconsisting of _________________ valence

electrons in its outer shell (most of the time with the exception of Hydrogen or Helium).

Name

of

Atom

# of

protons

and

electrons

Number

of

valence

electrons

Does this

atom

Gain (G)

or

Lose (L)

its v.e?

New#

of protons

and

electrons

Charge of

ion?

Write + for

proton(s)

Writefor

electrons(-)

Cation

or

Anion

Oxygen 8 p+/8 e- 6 v.e- G-2 v.e- 8 p+/10e- O- Anion

Aluminum

Sodium

Chlorine

Nitrogen

Lithium

Fluorine

Beryllium

Magnesium

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SUMMARY:

Fill in the blanks.

Atoms that gain electrons form __________________________ ions (now have extraelectrons).

Atoms that lose electrons form ___________________________ ions (now have extra protons)

POST ASSESSMENT:

What do the following Ions mean?

Example: O 2-= Oxygen gained 2 electrons

1. Sn 4+=

2. Hg 2+=

3. Li+=

4. F-=

5. P3-=

6. S2-=

7. N3-=

8. Mg2+=

9. B+3

10. Kr=

*Hint: Its a Noble gas.