Educational worksheet for learning about acids and bases, including matching terms and comparing the acidity or basicity of common liquids.

Task Overview:

The task involves matching terms with their correct definitions and comparing the acidity or basicity of various liquids. Let's solve it step by step.

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Part 1: Match the information with the correct term

#### Matching Definitions:
1. Color litmus paper changes to when dipped in an acid
- Litmus paper turns red in acids.
- Answer: N (red)

2. The type of ions released in a base
- Bases release hydroxide ions (\( \text{OH}^- \)).
- Answer: H (hydroxide)

3. Color litmus paper changes to when dipped in a base
- Litmus paper turns blue in bases.
- Answer: D (blue)

4. Different substances used to determine a base or an acid
- Substances used for this purpose are called indicators.
- Answer: I (indicators)

5. Naturally occurring plant used as an indicator orange in color
- Turmeric is a naturally occurring plant that acts as an indicator and turns orange in acids.
- Answer: O (turmeric)

6. Type of liquid that releases hydrogen ions
- Acids release hydrogen ions (\( \text{H}^+ \)).
- Answer: F (hydrochloric acid)

7. Hydrogen and hydroxide ions are equal in this type of liquid
- When hydrogen and hydroxide ions are equal, the solution is neutral.
- Answer: L (neutral)

8. Litmus is made from organisms that come from algae and fungus
- Litmus is derived from lichens, which are symbiotic organisms involving algae and fungi.
- Answer: J (lichens)

9. Type of liquid that releases hydroxide ions
- Bases release hydroxide ions (\( \text{OH}^- \)).
- Answer: C (base)

10. A scale used to determine the level of acidity or base
- The pH scale measures acidity or basicity.
- Answer: M (pH)

11. The type of ions released in an acid
- Acids release hydrogen ions (\( \text{H}^+ \)).
- Answer: G (hydrogen)

12. Found in the stomach of a person used for digestion
- Gastric acid is found in the stomach and aids in digestion.
- Answer: A (acere)

13. A Latin word that is translated to acid
- The Latin word for "acid" is acere.
- Answer: A (acere)

14. Type of paper used for measuring the acidity or base of a liquid
- Litmus paper is used to measure acidity or basicity.
- Answer: K (litmus)

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Part 2: Compare each of the liquids and circle whether it is more or less acidic or basic

#### Comparisons:
16. Gastric acid is (more or less) acidic than urine.
- Gastric acid is highly acidic (pH ~ 1-2), while urine is mildly acidic (pH ~ 4-8).
- Answer: More acidic

17. Milk of Magnesia is (more or less) basic than bleach.
- Milk of Magnesia is basic (pH ~ 10-11), while bleach is strongly basic (pH ~ 12-13).
- Answer: Less basic

18. Soapy water is (more or less) basic than ammonia.
- Soapy water is basic (pH ~ 9-10), while ammonia is also basic but slightly less so (pH ~ 11).
- Answer: Less basic

19. Black coffee is (more or less) acidic than orange juice.
- Black coffee is mildly acidic (pH ~ 5), while orange juice is more acidic (pH ~ 3-4).
- Answer: Less acidic

20. Lemon juice is (more or less) acidic than orange juice.
- Lemon juice is very acidic (pH ~ 2), while orange juice is also acidic but less so (pH ~ 3-4).
- Answer: More acidic

21. Sea water is (more or less) basic than baking soda.
- Sea water is slightly basic (pH ~ 8), while baking soda is more basic (pH ~ 9).
- Answer: Less basic

22. Bleach is (more or less) basic than ammonia.
- Bleach is strongly basic (pH ~ 12-13), while ammonia is basic (pH ~ 11).
- Answer: More basic

23. Gastric acid is (more or less) acidic than lemon juice.
- Gastric acid is highly acidic (pH ~ 1-2), while lemon juice is also acidic but less so (pH ~ 2).
- Answer: More acidic

24. Orange juice is (more or less) acidic than lemon juice.
- Orange juice is acidic (pH ~ 3-4), while lemon juice is more acidic (pH ~ 2).
- Answer: Less acidic

25. Baking soda is (more or less) basic than soapy water.
- Baking soda is basic (pH ~ 9), while soapy water is also basic but slightly less so (pH ~ 9-10).
- Answer: More basic

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Final Answers:

#### Part 1: Matching Definitions
1. N
2. H
3. D
4. I
5. O
6. F
7. L
8. J
9. C
10. M
11. G
12. A
13. A
14. K

#### Part 2: Comparisons
16. More acidic
17. Less basic
18. Less basic
19. Less acidic
20. More acidic
21. Less basic
22. More basic
23. More acidic
24. Less acidic
25. More basic

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Boxed Final Answer:

\[
\boxed{
\begin{array}{l}
\text{Part 1: } \text{N, H, D, I, O, F, L, J, C, M, G, A, A, K} \\
\text{Part 2: } \text{More acidic, Less basic, Less basic, Less acidic, More acidic, Less basic, More basic, More acidic, Less acidic, More basic}
\end{array}
}
\]