Acid and Base Worksheets - Free Printable

It looks like you've uploaded a worksheet titled "Acids, Bases, and Salts?" with a list of chemical substances and three diagrams related to acid-base reactions. The task is to classify each of the given substances as an acid, base, or salt.

Let's go through the list one by one and classify them correctly.

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List of Substances:

1. HF – Hydrofluoric acid
→ Acid

2. NaOH – Sodium hydroxide
→ Base

3. H₂SO₄ – Sulfuric acid
→ Acid

4. NaBr – Sodium bromide
→ Salt

5. NH₃ – Ammonia
→ Base (a weak base)

6. Mg(OH)₂ – Magnesium hydroxide
→ Base

7. HNO₃ – Nitric acid
→ Acid

8. CH₃COOH – Acetic acid
→ Acid

9. KOH – Potassium hydroxide
→ Base

10. HCl – Hydrochloric acid
→ Acid

11. H₂O – Water
→ Neutral (but often acts as both acid and base; in this context, usually considered neutral)

12. H₂CO₃ – Carbonic acid
→ Acid

13. Ca(OH)₂ – Calcium hydroxide
→ Base

14. CuCl₂ – Copper(II) chloride
→ Salt

15. H₃PO₄ – Phosphoric acid
→ Acid

16. Al(OH)₃ – Aluminum hydroxide
→ Base

17. NaCl – Sodium chloride
→ Salt

18. H₂S – Hydrogen sulfide
→ Acid (weak acid)

19. LiOH – Lithium hydroxide
→ Base

20. Ba(OH)₂ – Barium hydroxide
→ Base

21. FeCl₃ – Iron(III) chloride
→ Salt

22. H₂Se – Hydrogen selenide
→ Acid (weak acid)

23. NH₄Cl – Ammonium chloride
→ Salt

24. Na₂SO₄ – Sodium sulfate
→ Salt

25. Zn(OH)₂ – Zinc hydroxide
→ Base (amphoteric, but generally classified as a base)

26. HClO₄ – Perchloric acid
→ Acid

27. H₂SO₃ – Sulfurous acid
→ Acid

28. NaHCO₃ – Sodium bicarbonate
→ Salt (though it can act as a base in water)

29. K₂CO₃ – Potassium carbonate
→ Salt

30. BaCl₂ – Barium chloride
→ Salt

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✔ Final Classification:

| Number | Substance | Classification |
|--------|---------------|----------------|
| 1 | HF | Acid |
| 2 | NaOH | Base |
| 3 | H₂SO₄ | Acid |
| 4 | NaBr | Salt |
| 5 | NH₃ | Base |
| 6 | Mg(OH)₂ | Base |
| 7 | HNO₃ | Acid |
| 8 | CH₃COOH | Acid |
| 9 | KOH | Base |
| 10 | HCl | Acid |
| 11 | H₂O | Neutral |
| 12 | H₂CO₃ | Acid |
| 13 | Ca(OH)₂ | Base |
| 14 | CuCl₂ | Salt |
| 15 | H₃PO₄ | Acid |
| 16 | Al(OH)₃ | Base |
| 17 | NaCl | Salt |
| 18 | H₂S | Acid |
| 19 | LiOH | Base |
| 20 | Ba(OH)₂ | Base |
| 21 | FeCl₃ | Salt |
| 22 | H₂Se | Acid |
| 23 | NH₄Cl | Salt |
| 24 | Na₂SO₄ | Salt |
| 25 | Zn(OH)₂ | Base |
| 26 | HClO₄ | Acid |
| 27 | H₂SO₃ | Acid |
| 28 | NaHCO₃ | Salt |
| 29 | K₂CO₃ | Salt |
| 30 | BaCl₂ | Salt |

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🔍 Explanation of Key Concepts:

- Acids: Substances that donate H⁺ ions (protons). Examples: HCl, H₂SO₄, HNO₃.
- Bases: Substances that accept H⁺ ions or release OH⁻ ions. Examples: NaOH, KOH, NH₃.
- Salts: Ionic compounds formed from the neutralization reaction between an acid and a base. Examples: NaCl, Na₂SO₄, K₂CO₃.

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📌 Diagrams on the Worksheet:

The three diagrams likely represent:
1. A test tube with a gas being released (e.g., CO₂ from acid + carbonate).
2. A pH meter in a solution (used to measure acidity/basicity).
3. A titration setup (adding acid/base to determine concentration).

These are common lab setups for acid-base experiments.

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✔ Answer Summary:

You should fill in the blanks under "ACID", "BASE", or "SALT" based on the classification above.

For example:
- HF → Acid
- NaOH → Base
- NaBr → Salt

And so on.

Let me know if you'd like this formatted into a printable answer sheet!