7th Grade Chemistry Lectures

Are you a Chemistry teacher introducing your middle school students to Environment Water purification? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 26 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define water purification.

✦ List the steps of water purification.

✦ Define each step.

✦ Distinguish the difference between water purification and desalination.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Molecules & Covalent Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Reactants and Products | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solubility | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solution | PowerPoint Slides Middle School Chemistry | concentration & dilution

⤞ Titration | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Acids and Bases? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 22 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define the characteristics of acid and base

✦ Color indicators

✦ Ionization equations of acids and bases in water

✦ Identify the electrical conductivity of acids and bases

✦ Recognize the reaction of acids with metals

✦ Recognize the reaction of acids with bases

✦ Recognize the reaction of acids with bicarbonates

✦ Identify the dilution concept

✦ List the precautions applied when using acids and bases

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Balancing | PowerPoint Lesson Slides Middle School Chemistry

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical - Ionic Bonding | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Balancing? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 34 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define the law of conservation of matter

✦ Explain the process of balancing

✦ Apply on balancing

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical - Ionic Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Classification of Matter | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Titration? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 29 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Study the reaction between a strong acid and a strong base through acid-base titration.

✦ Identify the different parts of acid-base titration set-up.

✦ Identify the equivalence point using acid-base indicator.

✦ Specify the procedure of this titration.

✦ Write the neutralization equation that takes place.

✦ Calculate unknown concentration of acid or base.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Balancing | PowerPoint Lesson Slides Middle School Chemistry

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Titration? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 29 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Study the reaction between a strong acid and a strong base through acid-base titration.

✦ Identify the different parts of acid-base titration set-up.

✦ Identify the equivalence point using acid-base indicator.

✦ Specify the procedure of this titration.

✦ Write the neutralization equation that takes place.

✦ Calculate unknown concentration of acid or base.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Balancing | PowerPoint Lesson Slides Middle School Chemistry

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Balancing? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 34 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define the law of conservation of matter

✦ Explain the process of balancing

✦ Apply on balancing

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical - Ionic Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Classification of Matter | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Solution? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 37 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define concentration and dilution.

✦ Distinguish between concentration & dilution.

✦ List the methods to prepare a concentrate or dilute a solution.

✦ Apply some exercises on concentration.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Balancing | PowerPoint Lesson Slides Middle School Chemistry

⤞ Cation and Anion Salts | PowerPoint Lesson Slides Middle School Chemistry

⤞ Titration | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Reactants and Products? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 27 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Definition of a chemical reaction

✦ Definition of reactants and products

✦ Signs of a chemical reaction

✦ Examples of endothermic and exothermic reaction

✦ Lavoisier's Law

✦ Identification tests of some gases

✦ Catalyst and inhibitor

✦ Slow and fast reactions

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solubility | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solution | PowerPoint Slides Middle School Chemistry | concentration & dilution

⤞ Titration | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Elements and Compounds? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 29 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ To know the physical criteria of pure substances.

✦ To know the first 20 elements of the periodic table.

✦ To classify the elements into metals and non metals and to know the differences between metals and non metals.

✦ To differentiate between elements and compounds.

✦ To know the names and the symbols of the first 20 elements of the periodic table.

✦ To know the definition of an atom, its structure, its charge, its atomic number and its mass number.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Environment | Water purification | PowerPoint Slides Middle School Chemistry

⤞ Molecules & Covalent Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Reactants and Products | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solubility | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solution | PowerPoint Slides Middle School Chemistry | concentration & dilution

Are you a Chemistry teacher introducing your middle school students to Combustion Reaction? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 23 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define kindling temperature

✦ List the two types of combustion reactions

✦ Distinguish between both types of reactions

✦ List the types of air pollution.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Concept of pH Measure of the Acidity | PowerPoint Slides Middle School Chemistry

⤞ Criss Cross Method | PowerPoint Lesson Slides Middle School Chemistry

⤞ Elements and Compounds | PowerPoint Lesson Slides Middle School Chemistry

⤞ Environment | Water purification | PowerPoint Slides Middle School Chemistry

⤞ Molecules & Covalent Bonding | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Ionic Bonding? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 19 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define the ionic bond.

✦ Explain the ionic bond.

✦ Explain the bond formation of the ionic compound sodium chloride, magnesium fluoride, and potassium sulfide K2S.

✦ Chemical bonding.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Chemical Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Classification of Matter | PowerPoint Lesson Slides Middle School Chemistry

⤞ Combustion Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Concept of pH Measure of the Acidity | PowerPoint Slides Middle School Chemistry

⤞ Criss Cross Method | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Molecules and Covalent Bonding? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 25 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define a molecule

✦ Identify the electroneutrality of a molecule

✦ Identify the different representations of a molecule

✦ Identify the valence electron

✦ Give the types of molecules

✦ Define and calculate atomicity of a molecule

✦ Define covalent bonding

✦ Give the types of covalent bonding

✦ Explain each type of covalent bonding

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Reactants and Products | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solubility | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solution | PowerPoint Slides Middle School Chemistry | concentration & dilution

⤞ Titration | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Solubility? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 20 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define solubility.

✦ Define the three types of solutions: saturated, unsaturated and supersaturated.

✦ Prepare a supersaturated solution from a saturated solution.

✦ Explain the effects of surface area of solute, stirring, and heat on the rate of dissolving solid solutes in liquids.

✦ Explain the effects of temperature, pressure and shaking on the solubility of gases in water.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Acids and Bases | PowerPoint Lesson Slides Middle School Chemistry

⤞ Atomic Structure and Atoms | PowerPoint Lesson Slides Middle School Chemistry

⤞ Balancing | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solution | PowerPoint Slides Middle School Chemistry | concentration & dilution

⤞ Titration | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Cation and Anion Salts? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 20 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Illustrate that salts are made up of cations and anions.

✦ Differentiate between types of cations present in salts.

✦ List some cations present in salts.

✦ Transform word to chemical, ionic and net ionic equations.

✦ Apply on each type of salt formed.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Charge and ions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical - Ionic Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Classification of Matter | PowerPoint Lesson Slides Middle School Chemistry

⤞ Combustion Reactions | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Criss-Cross Method? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 14 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define what is a Criss-cross method.

✦ Apply on forming an ionic compound.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Elements and Compounds | PowerPoint Lesson Slides Middle School Chemistry

⤞ Environment | Water purification | PowerPoint Slides Middle School Chemistry

⤞ Molecules & Covalent Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Reactants and Products | PowerPoint Lesson Slides Middle School Chemistry

⤞ Solubility | PowerPoint Lesson Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Classification of Matter? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 22 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ List the physical properties of solid, liquid and gas.

✦ Differentiate between pure and mixture solutions.

✦ Differentiate between homogeneous and heterogenous mixtures.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Combustion Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Concept of pH Measure of the Acidity | PowerPoint Slides Middle School Chemistry

⤞ Criss Cross Method | PowerPoint Lesson Slides Middle School Chemistry

⤞ Elements and Compounds | PowerPoint Lesson Slides Middle School Chemistry

⤞ Environment | Water purification | PowerPoint Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Charge and ions? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 15 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define an ion.

✦ Distinguish between atom and ion.

✦ Apply on charge of ion.

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Chemical - Ionic Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Chemical Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Classification of Matter | PowerPoint Lesson Slides Middle School Chemistry

⤞ Combustion Reactions | PowerPoint Lesson Slides Middle School Chemistry

⤞ Concept of pH Measure of the Acidity | PowerPoint Slides Middle School Chemistry

Are you a Chemistry teacher introducing your middle school students to Concept of PH - Measure of the Acidity? Notes, examples and application exercises are included. You can also easily convert this to a Google Slides lesson by dragging it into your Google Drive.

What is included?

✦ 16 total slides for notes, examples and applications.

Throughout the Lesson, students will be introduced to the following:
✦ Define kindling temperature

✦ Define the concept of pH

✦ Define the pH scale

✦ Relate the pH with conductivity

✦ Relate the pH with dilution

✦ pH and Ions

✦ Measure the pH

This resource is great for:

• In-Classroom Teaching (Displaying for the Whole Class)
• Online Learning
• Homeschooling
• Sharing on Google Classroom or Other Platforms as a Tool for Revision

-Follow us on TeachShare to be informed with new products and updates.

➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵➵

More Related Products:

⤞ Criss Cross Method | PowerPoint Lesson Slides Middle School Chemistry

⤞ Elements and Compounds | PowerPoint Lesson Slides Middle School Chemistry

⤞ Environment | Water purification | PowerPoint Slides Middle School Chemistry

⤞ Molecules & Covalent Bonding | PowerPoint Lesson Slides Middle School Chemistry

⤞ Reactants and Products | PowerPoint Lesson Slides Middle School Chemistry