Objective
By the end of this lesson, you will understand the basic principles of chemistry and how they apply to everyday life, particularly when visiting a park.
Materials and Prep
- Pen and paper
No prior knowledge or preparation is required for this lesson.
Activities
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Activity 1: Exploring Elements
Take a walk in the park and observe your surroundings. Look for elements on the periodic table that might be present in nature. Make a list of at least five elements you think you might find and write down where you found them.
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Activity 2: Chemical Reactions
Collect different types of leaves, flowers, or other organic materials from the park. Arrange them in a container and pour vinegar over them. Observe what happens and write down your observations. Discuss why this reaction occurs.
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Activity 3: pH Testing
Collect water samples from different sources in the park (e.g., pond, fountain, tap). Use pH testing strips to determine the acidity or alkalinity of each sample. Record your results and discuss the importance of pH in different environments.
Seventh Grade Talking Points
- "Chemistry is the study of matter and its properties."
- "The periodic table is a chart that organizes all known elements based on their properties."
- "Elements can be found in nature, and some are commonly found in parks, like oxygen, carbon, and nitrogen."
- "Chemical reactions occur when substances interact and form new substances with different properties."
- "Vinegar reacts with certain organic materials, like leaves, due to the presence of acetic acid."
- "pH is a measure of how acidic or alkaline a substance is."
- "Different environments, such as ponds or fountains, can have varying pH levels, which can affect the organisms living in them."