Objective

By the end of this lesson, you will understand the basic principles of chemistry through exploring the properties of stickers.

Materials and Prep

• Various stickers of different shapes, sizes, and materials
• A clean surface for sticking the stickers (e.g., a sheet of paper)
• A magnifying glass (optional)

No prior knowledge or preparation is required for this lesson.

Activities

1. Begin by observing and describing the different stickers you have. Note their shapes, sizes, and any unique features.
2. Stick the stickers onto the clean surface. Observe how they adhere and whether any of them have a stronger bond than others.
3. Try peeling off the stickers. Pay attention to the ease of removal and any residue left behind.
4. (Optional) Use a magnifying glass to examine the stickers up close. Look for any patterns or textures on their surfaces.
5. Discuss your observations and findings. What similarities or differences did you notice among the stickers? Can you explain why some stickers stick better than others?

Seventh Grade Talking Points

• "Chemistry is the branch of science that deals with the properties, composition, and behavior of matter."
• "Stickers are made up of different materials, such as paper, vinyl, or plastic."
• "The stickiness of a sticker is determined by the adhesive used."
• "Adhesives work by creating intermolecular forces between the sticker and the surface it is stuck to."
• "Different stickers may have different adhesives, which can result in variations in stickiness."
• "The size, shape, and texture of the sticker's surface can also affect how well it sticks."
• "Chemists study the properties of materials and develop different adhesives for various purposes."