Air: A Mixture of Gases
Understand that air is a mixture of different gases (primarily nitrogen and oxygen) and explore its properties.
Key Questions
- What is air made of?
- How do we know air takes up space?
- Why is air important for living things?
NCCA Curriculum Specifications
Suggested Methodologies
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Planning templates for Foundations of Matter and Chemical Change
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Introduce the idea that new substances can be formed when materials react, observing simple chemical changes like baking soda and vinegar.
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Identify common indicators of a chemical change, such as gas production (bubbles), color change, temperature change, or light production.
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Differentiate between physical changes (e.g., tearing paper, melting ice) where the substance remains the same, and chemical changes where new substances form.
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Introduce the concept of acids and bases using common household examples (e.g., lemon juice, vinegar, baking soda) and simple indicators.
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Observe what happens when an acid and a base are mixed, demonstrating a simple neutralization reaction using indicators.
3 methodologies