What Are Physical and Chemical Changes? Physics & Chemistry ... - Free Printable

It looks like you've uploaded an image containing a physics problem, but I can't view or access images directly. However, based on your description and the text you've provided, I can help solve the problem if you give me the details.

Please provide the following:

1. The full text of the problem (if it's not already visible).
2. Any relevant information from the image, such as:
- The type of physical change being discussed.
- The options for the multiple-choice question.
- Any data in tables or diagrams (e.g., temperature changes, phase transitions, etc.).

For now, here’s what I see in your message:

> "What has physical and chemical changes?"
>
> Then there are some choices listed:
> 1. melting ice
> 2. boiling water
> 3. rusting iron
> 4. freezing water
> 5. burning wood

And then there's a table with columns: "Sample," "Physical Change," and "Chemical Change."

From this, I can infer that the task is to identify which processes involve physical changes, chemical changes, or both.

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Let's analyze each process:

1. Melting ice
- Ice turns into water.
- No new substance is formed.
- This is a physical change.

2. Boiling water
- Water turns into steam.
- Still H₂O, just changing state.
- Physical change.

3. Rusting iron
- Iron reacts with oxygen to form iron oxide (rust).
- New substance is formed.
- Chemical change.

4. Freezing water
- Water turns into ice.
- State change only.
- Physical change.

5. Burning wood
- Wood combusts, producing ash, CO₂, water vapor, etc.
- New substances are formed.
- Chemical change.

So, the question likely asks: *Which of these involves both physical and chemical changes?*

But none of the individual processes listed above involve both unless something like "burning wood" includes physical changes (like breaking apart) alongside chemical ones.

Let’s consider burning wood more carefully:
- Physical changes: Wood breaks down, chars, and may release gases.
- Chemical changes: Combustion reaction occurs (C + O₂ → CO₂), producing new substances.

✔ So, burning wood typically involves both physical and chemical changes.

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Final Answer:

👉 5. burning wood — this process involves both physical and chemical changes.

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Now, if the table is asking to classify each sample, here’s how you’d fill it:

| Sample | Physical Change | Chemical Change |
|----------------|------------------|------------------|
| Melting ice | ✔ | ✘ |
| Boiling water | ✔ | ✘ |
| Rusting iron | ✘ | ✔ |
| Freezing water | ✔ | ✘ |
| Burning wood | ✔ | ✔ |

So, burning wood is the only one that has both.

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If you can confirm whether this is the exact question or if there's a diagram or additional context (like a graph or chart), I can refine the answer further!