Ions

Ions

Protons vs Electrons

Ions

Protons vs Electrons

IONS

Ions are formed when a neutral atom gains or loses __________ to become charged.


○ Two Types:

○ C______ have a ________ charge
○ A______ have a ________ charge.

Drag and Drop

Add this to your notes:

Ions are formed when a neutral atom gains or loses ​

Placeholder

to become charged.

Placeholder

have a positive charge.

​

Placeholder

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)

Drag and Drop

Add this to your notes:

Cations are formed when a neutral atom ​

Placeholder

electrons and becomes ​

Placeholder

charged.

Drag these tiles and drop them in the correct blank above

gains

negatively

loses

positively

Anion

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

aNion (N → Negative)

Dropdown

Add this to your notes:

Anions are formed when a neutral atom ​ ​

Select answer

electrons and becomes ​ ​

Select answer

charged.

Writing Ion Symbols

○ Ion symbols are written with the ion

charge in the upper right corner.

○ Ex. Mg⁺², Cl^-, Li⁺

Anions have a - symbol in their charge
N^-3 means that N has a negative charge of 3 because it gained three electrons.
F^1- means that F has a negative charge of 1 because it gained one electron. A -1 charge can also just be written as -.

Anion Symbols

Cations have a + symbol in their charge
Mg²⁺ means that Mg has a positive charge of 2 because it lost two electrons.
Na¹⁺ means that Na has a positive charge of 1 because it lost one electron. A +1 charge can also just be written as +.

Cation Symbols

Ion Charges

Categorize

Options (4)

S^-2

N^-3

Na⁺

Mg⁺²

Sort the following ions into cations or anions

Anion

Cation

Categorize

Options (11)

F^-

S^-2

Cl^-1

K⁺¹

Ca⁺²

O^2-

Mg²⁺

Cs⁺

Ba⁺²

Sr⁺²

Zn⁺²

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

Practice Time!

Instructions: Now let's apply the skills you've learned. You will need the Simple Ion Worksheet to go with the next few slides.

Drag and Drop

Fill in the following to describe how fluoride becomes an ion. You may use answers more than once, and some answers may not be used at all. Use this to answer the first row on the Simple Ion Worksheet:



Fluorine has ​ ​

Placeholder

protons. A neutral atom of fluorine has ​ ​

Placeholder

electrons. When fluorine becomes an ion, it becomes an anion with a charge of -1. This means that it ​

Placeholder

​

Placeholder

electron. Negatively charged ions are renamed to change the ending to -ide, so fluorine becomes fluoride. The fluoride ion, F^- , will have a total of ​ ​

Placeholder

electrons, which matches the noble gas Neon.

Drag these tiles and drop them in the correct blank above

9

gains

1

10

loses

Drag and Drop

Fill in the following to describe how calcium becomes an ion. You may use answers more than once, and some answers may not be used at all. Use this to answer #4 on the Simple Ion Worksheet :



Calcium has ​​

Placeholder

protons. A neutral atom of calcium has ​

Placeholder

electrons. When calcium becomes an ion, it becomes a cation with a charge of +2. This means that it ​

Placeholder

​

Placeholder

electrons. Positively charged ions are NOT renamed to change the ending , so calcium ions are just called calcium ions. The calcium ion, Ca⁺² , will have a total of ​

Placeholder

​electrons, which matches the noble gas argon.

Drag these tiles and drop them in the correct blank above

19

20

loses

2

18

gains

Practice: Simple Ion Worksheet

Continue working on the Simple Ion Worksheet.