21/10: Ionic compounds

• Chemistry
• Secondary Education

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

Good Morning!

• Where will you put your learning materials: notebook, workbook, coursebook, pen and pencil, and laptop?
• Have you kept your phone in your locker?
• Have you joined our LessonUp slides?
• Have you gone to the bathroom before the class starts?
• Have you checked any announcements or missing work on our Google Classroom?
• Are you seated in your assigned chair?

Period 1: Lesson 18

Period 2: STEM Project

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

state the meaning of ionic bonds, cations, and anions.

draw a dot-and-cross diagram of metals and non-metals.

describe how ionic bonds are formed using the dot-and-cross diagram.

• Classify the following according to the type of ion. One does not belong to any group.

Cation

Anion

sodium ion

Cl⁻

chloride ion

Mg²⁺

lithium ion

H⁺

K⁺

oxygen gas

S²⁻

I can state the meaning of ionic bonds, cations, and anions.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

Ionic bond

• a strong electrostatic attraction between oppositely charged ions

Ionic bond

• a strong electrostatic attraction between oppositely charged ions

Ionic bond

• a strong electrostatic attraction between oppositely charged ions

outer shell

How do ions form?

SAMPLE 1: 

Neutral lithium atom → Charged lithium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Li

How do ions form?

SAMPLE 1: 

Neutral lithium atom → Charged lithium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Li

How do ions form?

SAMPLE 1: 

Neutral lithium atom → Charged lithium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Li

How do ions form?

SAMPLE 1: 

Neutral lithium atom → Charged lithium cation

How do ions form?

SAMPLE 2: 

Neutral sodium atom → Charged sodium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell

How do ions form?

SAMPLE 2: 

Neutral sodium atom → Charged sodium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Na

How do ions form?

SAMPLE 2: 

Neutral sodium atom → Charged sodium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Na

How do ions form?

SAMPLE 2: 

Neutral sodium atom → Charged sodium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Na

How do ions form?

SAMPLE 2: 

Neutral sodium atom → Charged sodium cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

Na

How do ions form?

SAMPLE 3: 

Neutral fluorine atom → Charged fluoride cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

How do ions form?

SAMPLE 3: 

Neutral fluorine atom → Charged fluoride cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

F

How do ions form?

SAMPLE 3: 

Neutral fluorine atom → Charged fluoride cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

F

How do ions form?

SAMPLE 3: 

Neutral fluorine atom → Charged fluoride cation

GUIDE QUESTIONS:

• (a) What is its atomic number or proton number? 
• (b) What is its electron number?
• (c) What period is it located in the PT? 
• (d) So, how many shells does it have? 
• (e) What is its electronic configuration?
• (f) So, what group does it belong to? How did you know? 
• (g) Is it a metal or non-metal? 
• (h) Will it change to cation or anion? Why? 
• (i) Will it lose or gain electron/s? How many? 
• (j) How will you show it in Bohr's model?
• (k) Why does an atom need to change into ions? 
• (l) What makes an ion stable? It has a full outer shell.

F

I can draw a dot-and-cross diagram of metals and non-metals.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

How does the salt lithium chloride form?

Lithium + Chlorine → Lithium chloride

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Lithium

Chlorine

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Lithium

Chlorine

How does the salt lithium chloride form?

Lithium + Chlorine → Lithium chloride

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Lithium

Chlorine

2 , 1

2 , 8, 7

__ , ___

__ , ___ , ___

How does the salt lithium chloride form?

Lithium + Chlorine → Lithium chloride

javalab.org

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

How does the salt sodium fluoride form?

Sodium + Fluorine → Sodium fluoride

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Sodium

Fluorine

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Sodium

Fluorine

How does the salt sodium fluoride form?

Sodium + Fluorine → Sodium fluoride

GUIDE QUESTIONS:

• What period is it located on the PT?
• How many shells does it have? 
• How many electrons does lithium have?
• What is its electronic configuration? 
• Is the outer shell full? Is it stable?
• What will it do to become stable? 

Sodium

Fluorine

2 , 8 , 1

2 , 7

__ , ___

__ , ___ 

How does the salt sodium fluoride form?

Sodium + Fluorine → Sodium fluoride

Share your thought process in calculating the relative molecular/formula mass.

I can describe how ionic bonds are formed using the dot-and-cross diagram.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

Classwork 10.1

Apply your learned knowledge and skills:

(a) State the meaning of ionic bond.

An ionic bond is _________________________.

(b) Choose one only. 

Describe using a dot-and-cross diagram:

- potassium ionically bonds with fluorine  OR

- sodium ionically bonds with bromine

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CHEMISTRY 9

                   18: Ionic compounds

Topic 6: Chemical bonding and Formulae

Week 11

I can define ionic bonds, cations, and anions.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

I can state the meaning of ionic bonds, cations, and anions.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

I can draw a dot-and-cross diagram of metals and non-metals.

Yes, I can confidently do it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

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STEM Project

Building a Futuristic City Scale Model

Week 11