| Full lesson | Create for a teacher a set of content for giving a lesson, beginning with the lesson plan. Each new block of materials must begin with an H1 heading (other subheaders must be H2, H3, etc). When you describe required pictures, write those descriptions in curly brackets, for example: {A picture of a triangle} |
| Which subject | Science |
| What topic | Chemical reactions |
| What length (min) | 30 |
| What age group | Year or Grade 7 |
| Class size | 20 |
| What curriculum | |
| Include full script | |
| Check previous homework | |
| Ask some students to presents their homework | |
| Add a physical break | |
| Add group activities | |
| Include homework | |
| Show correct answers | |
| Prepare slide templates | |
| Number of slides | 5 |
| Create fill-in cards for students | |
| Create creative backup tasks for unexpected moments |
Chemical Reactions
Grade 7
Science
30 minutes
20
This lesson aligns with the Next Generation Science Standards (NGSS) for middle school, focusing on chemical processes and reactions.
| Step Number | Step Title | Length (minutes) | Details |
|---|---|---|---|
| 1 | Introduction | 5 | Introduce the topic of chemical reactions. Discuss real-world examples and ask students for their thoughts. |
| 2 | Presentation | 10 | Present key concepts of chemical reactions using a PowerPoint. Explain types, signs, and examples of chemical reactions. |
| 3 | Card Activity | 10 | Distribute printable cards to each student. Instruct them to fill out the cards based on the presentation content. |
| 4 | Check Cards | 3 | Collect the cards for a random check of student understanding. |
| 5 | Assign Homework | 2 | Provide details of the homework assignment without individual presentations. Ensure students understand the next steps. |
| 6 | Wrap-Up Discussion | 1 | Briefly recap the lesson's key points. Answer any final questions from students. |
"Good morning, everyone! Today, we are diving into a really exciting topic in science—chemical reactions! Can anyone tell me what they think a chemical reaction is? (Pause for student responses.) Great thoughts! Chemical reactions are everywhere around us, from the food we eat to the batteries that power our devices. For example, when you bake a cake, you’re actually causing a chemical reaction that transforms the ingredients into something completely new. Let’s explore this topic further!"
"Now, I’d like you all to focus on the screen as we go through a PowerPoint presentation on chemical reactions. (Begin presentation.)"
"First, let’s define what a chemical reaction is: it’s a process where substances, called reactants, combine to form new substances known as products. There are several types of chemical reactions, such as synthesis reactions, decomposition reactions, single replacement reactions, and double replacement reactions. (Explain each type briefly.)"
"Next, let’s discuss the signs of a chemical reaction. Some common signs include a change in color, the production of gas, the formation of a precipitate, or a change in temperature. Remember, you might not see all these signs in every reaction. Can anyone think of a real-world example where they've seen one of these signs? (Pause for responses.) Excellent examples!"
"We will be using this understanding for our next activity, so keep these points in mind!"
"Now, it’s time for a fun activity! I have prepared some printable cards for each of you. I’d like you to take a card and fill it out based on the information we've just covered in the presentation. You can write down the type of reaction and provide an example for each type. (Distribute the cards.)"
"As you work on this, feel free to collaborate with your classmates—discuss your thoughts and examples. I’ll give you about 10 minutes for this activity, so make sure to stay focused and help each other out!"
"Okay, time’s up! Can I have your attention back up here? Thank you! Now, I’d like you to pass your cards to the front of the classroom. I will randomly check a few of them to see how we are doing with our understanding of chemical reactions. Remember, this is just for me to see where we might need to focus more in our next lessons. (Collect cards and check students’ understanding.)"
"Great job today, everyone! Before we finish up, I want to assign a simple homework task. I’d like each of you to find a news article or a video clip that talks about a chemical reaction happening in real life. You’ll need to summarize what happens and identify what type of reaction it is. Be ready to discuss your findings in our next class."
"Do you all understand the assignment? (Check for understanding.) Awesome!"
"To wrap up our lesson, let’s quickly recap what we learned today. We talked about what chemical reactions are, the different types we can encounter, and the signs that indicate a reaction has occurred. Does anyone have final questions or thoughts they want to share? (Pause for any questions.)"
"Thank you all for your participation today! I’m really looking forward to seeing what you find for your homework. Have a great day!"
Define a chemical reaction in your own words. Provide an example of a chemical reaction from everyday life.
List and briefly describe the four main types of chemical reactions covered in the lesson: synthesis, decomposition, single replacement, and double replacement.
Identify and explain three signs that indicate a chemical reaction has taken place. Provide a real-world example for each sign.
Choose one type of chemical reaction discussed in class. Find a news article or video clip that showcases an example of this type of reaction occurring in real life. Summarize what happens in the reaction and explain why it fits the chosen type.
Create a table that includes the following for seven different chemical reactions you can think of:
Why is it important to understand chemical reactions in our daily lives? Write a short paragraph expressing your thoughts.
Reflecting on the card activity, what was the most challenging part for you, and what did you learn from discussing with your classmates?
Prepare a few discussion questions that can be posed in the next class regarding the homework assignment and the types of chemical reactions you explored.
| Question | Answer |
|-----------------------------------------------------------------------------------------------------------|--------|
| What is a chemical reaction? | |
| Can you name the substances involved in a chemical reaction? | |
| What are the four main types of chemical reactions? | |
| Describe a synthesis reaction with an example. | |
| What is a decomposition reaction? | |
| Give an example of a single replacement reaction. | |
| What are the signs that indicate a chemical reaction has taken place? | |
| Can you explain what is meant by the formation of a precipitate? | |
| How does temperature change during some chemical reactions? | |
| Provide a real-world example where you have observed a chemical reaction. | |
| What type of reaction is occurring when baking a cake? | |
| Why is it important to understand chemical reactions in everyday life? | |
| What was the homework assignment regarding chemical reactions? | |
| How can you identify the type of reaction from a news article or video clip? | |
| What questions do you still have about chemical reactions after today's lesson? | |