This chart helps students distinguish between physical changes, like cutting grass, and chemical changes, like burning wood.

The task in the image appears to be about identifying whether each activity represents a physical change or a chemical change. Here's a breakdown of the solution:

Definitions:

- Physical Change: A change in which the physical properties of a substance (e.g., shape, size, state) are altered, but the chemical composition remains the same.
- Chemical Change: A change in which the chemical composition of a substance is altered, resulting in the formation of new substances.

Solution:

Let's analyze each activity and categorize it as either a physical change or a chemical change.

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#### Row 1
1. Cutting an apple
- Physical Change: The apple is being cut into pieces, but its chemical composition remains unchanged.

2. Baking a cookie
- Chemical Change: Baking involves heating, which causes chemical reactions (e.g., caramelization, Maillard reaction), changing the ingredients into a new substance (cookie).

3. Lighting a match
- Chemical Change: Lighting a match produces heat, light, and smoke, indicating a chemical reaction where new substances are formed.

4. Melting ice
- Physical Change: Melting is a phase change from solid to liquid, but the chemical composition of water (H₂O) remains the same.

5. Roasting a marshmallow
- Chemical Change: Roasting causes the sugar in the marshmallow to caramelize, forming new compounds through chemical reactions.

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#### Row 2
6. Freezing water
- Physical Change: Freezing is a phase change from liquid to solid, but the chemical composition of water (H₂O) remains unchanged.

7. Burning a candle
- Chemical Change: Burning involves combustion, where wax reacts with oxygen to produce carbon dioxide, water, and heat.

8. Dissolving sugar
- Physical Change: Dissolving sugar in water separates the sugar molecules but does not change their chemical composition.

9. Ripping paper
- Physical Change: Ripping paper tears it apart physically without altering its chemical structure.

10. Slicing bread
- Physical Change: Slicing bread changes its shape but does not alter its chemical composition.

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#### Row 3
11. Boiling water
- Physical Change: Boiling is a phase change from liquid to gas, but the chemical composition of water (H₂O) remains the same.

12. Crushing a can
- Physical Change: Crushing deforms the can physically but does not change its chemical composition.

13. Breaking a mirror
- Physical Change: Breaking a mirror shatters it into pieces but does not alter its chemical composition.

14. A decaying leaf
- Chemical Change: Decay involves decomposition, where microorganisms break down the leaf, forming new substances.

15. Frying an egg
- Chemical Change: Frying causes proteins in the egg to denature and form new structures, indicating a chemical change.

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#### Row 4
16. Mixing vinegar and baking soda
- Chemical Change: Mixing vinegar (acetic acid) and baking soda (sodium bicarbonate) produces carbon dioxide gas, water, and sodium acetate, indicating a chemical reaction.

17. A rusting bike
- Chemical Change: Rusting is oxidation, where iron reacts with oxygen and water to form iron oxide (rust), a new substance.

18. Burning wood
- Chemical Change: Burning wood involves combustion, producing carbon dioxide, water, and ash.

19. Cutting grass
- Physical Change: Cutting grass changes its shape but does not alter its chemical composition.

20. Digesting food
- Chemical Change: Digestion involves breaking down food into simpler substances through chemical reactions in the body.

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Final Answer:

Here is the categorization:

| Activity | Type |
|------------------------------|---------------|
| Cutting an apple | Physical |
| Baking a cookie | Chemical |
| Lighting a match | Chemical |
| Melting ice | Physical |
| Roasting a marshmallow | Chemical |
| Freezing water | Physical |
| Burning a candle | Chemical |
| Dissolving sugar | Physical |
| Ripping paper | Physical |
| Slicing bread | Physical |
| Boiling water | Physical |
| Crushing a can | Physical |
| Breaking a mirror | Physical |
| A decaying leaf | Chemical |
| Frying an egg | Chemical |
| Mixing vinegar and baking soda | Chemical |
| A rusting bike | Chemical |
| Burning wood | Chemical |
| Cutting grass | Physical |
| Digesting food | Chemical |

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\boxed{\text{See the detailed explanation above for each activity.}}
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