This answer key illustrates the difference between physical changes, such as slicing bread, and chemical changes, like frying eggs.

Let’s go through each example in the chart and decide whether it’s a Physical Change or a Chemical Change.

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What’s the difference?

- Physical Change: The substance looks different, but it’s still the same material. You can often reverse it (like melting ice back to water). No new substance is made.

- Chemical Change: A new substance is formed. It usually can’t be easily reversed. Signs include color change, bubbles, heat, smoke, or smell.

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Now let’s check each one:

#### Physical Change Side:
1. Breaking a plate → Still glass/ceramic, just in pieces → ✔ Physical
2. Cutting paper → Still paper, just smaller → ✔ Physical
3. Peeling a banana → Banana is still banana, peel removed → ✔ Physical
4. Slicing bread → Bread is still bread, just cut → ✔ Physical
5. A melting popsicle → Ice turning to liquid — still water/sugar mix → ✔ Physical
6. Water freezing to ice → Water changing state — still H₂O → ✔ Physical

All of these are correctly labeled as Physical Changes.

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#### Chemical Change Side:
1. Burning wood → Turns to ash and smoke — new substances → ✔ Chemical
2. A pear that is rotting → Decomposing — smells bad, changes color, microbes involved → ✔ Chemical
3. Frying eggs → Egg white turns from clear to white — protein changed forever → ✔ Chemical
4. Baking a cake → Ingredients react when heated — rises, browns, can’t unbake → ✔ Chemical
5. Lighting a firecracker → Explodes, makes light/smoke/sound — big reaction → ✔ Chemical
6. Rust forming on a nail → Iron + oxygen + water = rust (new substance) → ✔ Chemical

All of these are correctly labeled as Chemical Changes.

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✔ So, every item in the chart is sorted correctly!

Final Answer: All examples are correctly categorized — Physical Changes on the left, Chemical Changes on the right.