https://file.aiquickdraw.com/mathbot/file/1729870020318a0cs9x97.jpg

Let's match the items based on their descriptions:

1. **NaOH** - NaOH is a strong base, meaning it has a **high pH**. Therefore, it matches with **D. high pH**.

2. **HCl** - HCl is a strong acid, meaning it has a **low pH**. Therefore, it matches with **A. low pH**.

3. **Pure H₂O** - Pure water is neutral with a pH of 7. This matches with **C. pH 7**.

4. **Phenolphthalein** - Phenolphthalein is commonly used as an acid/base indicator. This matches with **B. acid/base indicator**.

Here’s the final matching:

- NaOH → D. high pH
- HCl → A. low pH
- Pure H₂O → C. pH 7
- Phenolphthalein → B. acid/base indicator

Would you like more details on these concepts or have any specific questions?

Here are five related questions to think about:
1. What is the pH range of a strong acid like HCl?
2. How does the concentration of hydroxide ions (OH⁻) compare in NaOH versus water?
3. What other substances can act as acid/base indicators like phenolphthalein?
4. Why is water neutral, and how can its pH be altered?
5. What are the uses of NaOH and HCl in real-life applications?

**Tip:** pH indicators like phenolphthalein change color based on whether a solution is acidic or basic, helping to quickly identify the pH range of a substance.

Match the following: NaOH, HCl, Pure H2O, Phenolphthalein with their corresponding pH-related descriptions.

Test your knowledge of acids, bases, and pH indicators by matching NaOH, HCl, pure water, and phenolphthalein to their corresponding pH values and descriptions. This exercise helps solidify concepts related to the pH scale and acid/base chemistry.

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