Educational chart showing examples of physical and chemical changes with corresponding images.

The image presents a grid of 20 different processes or actions, each illustrated with an image and a label. The task appears to be classifying each process as either a physical change or a chemical change.

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🔬 Understanding the Concepts:

- Physical Change: A change in which the substance's form or state changes, but its chemical composition remains the same. No new substances are formed.
- Examples: cutting, melting, freezing, dissolving, boiling, crushing.

- Chemical Change: A change in which new substances are formed due to a chemical reaction. Often involves color change, gas production, temperature change, or irreversible transformation.
- Examples: burning, rusting, cooking, digestion, rotting.

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✔ Let's classify each one:

| Image | Process | Type of Change | Reason |
|------|--------|----------------|--------|
| 1 | Cutting an apple | Physical | Only shape/size changes; no new substance. |
| 2 | Baking a cookie | Chemical | Ingredients react to form new compounds (browning, rising). |
| 3 | Lighting a match | Chemical | Combustion produces heat, light, gases. |
| 4 | Melting ice | Physical | Water changes from solid to liquid; H₂O remains H₂O. |
| 5 | Roasting a marshmallow | Chemical | Browning and charring involve combustion and Maillard reaction. |
| 6 | Freezing water | Physical | State change from liquid to solid. |
| 7 | Burning a candle | Chemical | Wax combusts to produce CO₂, water vapor, and light. |
| 8 | Dissolving sugar | Physical | Sugar molecules disperse in water, but no new substance formed. |
| 9 | Ripping paper | Physical | Paper is torn, but still paper. |
| 10 | Slicing bread | Physical | Size changed; no chemical alteration. |
| 11 | Boiling water | Physical | Liquid to gas; still H₂O. |
| 12 | Crushing a can | Physical | Shape changes; material unchanged. |
| 13 | Breaking a mirror | Physical | Glass shattered, but composition unchanged. |
| 14 | A decaying leaf | Chemical | Decomposition by microbes creates new substances (e.g., compost). |
| 15 | Frying an egg | Chemical | Proteins denature and coagulate – irreversible change. |
| 16 | Mixing vinegar and baking soda | Chemical | Produces carbon dioxide gas (fizzing), a new substance. |
| 17 | A rusting bike | Chemical | Iron reacts with oxygen to form iron oxide (rust). |
| 18 | Burning wood | Chemical | Combustion releases energy, CO₂, ash – new substances. |
| 19 | Cutting grass | Physical | Grass is cut; no chemical change. |
| 20 | Digesting food | Chemical | Enzymes break down food into simpler molecules (e.g., glucose). |

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📊 Final Classification Summary:

#### 🔹 Physical Changes (11):
- Cutting an apple
- Melting ice
- Freezing water
- Dissolving sugar
- Ripping paper
- Slicing bread
- Boiling water
- Crushing a can
- Breaking a mirror
- Cutting grass
- (Note: "Mixing vinegar and baking soda" is not physical — see below)

Wait! Let's correct that:

Actually:
- Dissolving sugar = Physical ✔
- But Mixing vinegar and baking soda = Chemical ✘

So let’s fix the list:

#### ✔ Physical Changes (10):
1. Cutting an apple
2. Melting ice
3. Freezing water
4. Dissolving sugar
5. Ripping paper
6. Slicing bread
7. Boiling water
8. Crushing a can
9. Breaking a mirror
10. Cutting grass

#### 🔥 Chemical Changes (10):
1. Baking a cookie
2. Lighting a match
3. Roasting a marshmallow
4. Burning a candle
5. A decaying leaf
6. Frying an egg
7. Mixing vinegar and baking soda
8. A rusting bike
9. Burning wood
10. Digesting food

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✔ Conclusion:

The task is likely to sort these 20 processes into two categories: Physical Change and Chemical Change.

✔ Physical Changes: 10 items
🔥 Chemical Changes: 10 items

This classification helps students understand the difference between changes that only affect form (physical) vs. those that create new substances (chemical).

Let me know if you'd like this sorted into a table or worksheet format!