Year 10 Science · Unit 2 · Lesson 8
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Learning Goals
Because… chain
Each row on the left is one step in the chain, and the next row is what happens after it. In the box, write the because — the reason that step forces the next one. Do not copy the next step’s words back; explain what makes it follow.
Overall outcome: How does a catalytic converter address this problem?
Compare two
Complete the table to compare complete combustion and cellular respiration.
| Feature | Complete Combustion | Cellular Respiration |
|---|---|---|
| Reactants | ||
| Products | ||
| Energy released or absorbed? | ||
| Controlled or uncontrolled? | ||
| Purpose / where it occurs |
(a) Cellular respiration is sometimes called "controlled combustion." Using your table above, explain what makes it similar to combustion, and what makes it different.
1. During the 2019–20 Australian Black Summer bushfires, smoke blanketed cities for weeks. Using your knowledge of combustion, explain why prolonged exposure to this smoke is harmful to human health.
2. Photosynthesis and cellular respiration are described as "opposite reactions." Identify ONE similarity and ONE difference between them.
Wrap Up
In one sentence, what was the main idea of this lesson?