Test Review for pH and Redox
-
Upload
kameko-rojas -
Category
Documents
-
view
17 -
download
0
description
Transcript of Test Review for pH and Redox
![Page 1: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/1.jpg)
Test Review for
pH and Redox
![Page 2: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/2.jpg)
Teacher Copy
![Page 3: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/3.jpg)
1. TRUE or FALSE
The pH of hair relaxers is basic (alkaline)
![Page 4: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/4.jpg)
1. TRUE
• Hair relaxers usually have a pH between 11-13
![Page 5: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/5.jpg)
2. SHORT ANSWER
• What happens to hair when the pH is above 13 or
below 1?
![Page 6: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/6.jpg)
2. It dissolves
• Hair dissolves completely when the pH is VERY high or VERY low
![Page 7: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/7.jpg)
3. MULTIPLE CHOICE• Which of the following is the most
likely pH for the ends of long hair?
A. 16
B. 14
C. 6.5
D. 5
E. 1
![Page 8: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/8.jpg)
3. C
• Hair becomes more alkaline the further it is away from the scalp. The ends of hair may have a pH 1 to 2 pH points higher than that of hair right next to the scalp.
![Page 9: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/9.jpg)
4. MULTIPLE CHOICE
• Which of the following substances is an oxidizing agent?
• A. H2O2
• B. perborate• C. ammonia• D. Ammonium thioglycolate• E. Both A. and B. are correct
![Page 10: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/10.jpg)
4. A.
Other oxidizing agents are:• H2O2
• Ammonia and ammonium thioglycolate are reducing agents
![Page 11: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/11.jpg)
5. SHORT ANSWER
• How would you describe a combustion reaction?
![Page 12: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/12.jpg)
5. A rapid oxidation that releases energy in the form of heat and light
![Page 13: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/13.jpg)
6. SHORT ANSWER
• A pH of 8.0 is ___ times more basic than a pH of 6.0
![Page 14: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/14.jpg)
6. 100
• pH changes by a factor of 10 between each number on the pH scale
![Page 15: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/15.jpg)
7. TRUE or FALSE
• A solution with a pH of 9.0 can be more acidic than a solution with a pH 7.0
![Page 16: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/16.jpg)
7. FALSE
• A pH number can only be more BASIC than any number smaller than itself
• Conversely, a pH number can only be more ACIDIC than any number larger than itself
![Page 17: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/17.jpg)
8. SHORT ANSWER
• What is a good pH range for skin care products?
![Page 18: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/18.jpg)
8. pH 4 - pH 8
![Page 19: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/19.jpg)
9. SHORT ANSWER
• An ion with a negative charge is called a(n) ___.
![Page 20: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/20.jpg)
9. anion
![Page 21: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/21.jpg)
10. MULTIPLE CHOICE• Which pH number would contain
the most hydroxide ions?A. 7B. 7.5C. 10D. 3E. 1
![Page 22: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/22.jpg)
10. C
• As the pH number ↑, the number of OH – ions also ↑
![Page 23: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/23.jpg)
11. TRUE or FALSE
• In an aqueous solution, as the H+ concentration ↑ the OH – ↓
![Page 24: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/24.jpg)
11. TRUE
![Page 25: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/25.jpg)
12. TRUE or FALSE
• As the pH number ↑ the solution becomes more acidic.
![Page 26: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/26.jpg)
12. FALSE
• As pH number increases the solution becomes more basic (alkaline)
![Page 27: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/27.jpg)
13. TRUE or FALSE
• The products of a neutralization reaction (when an acid and a base react) are always salt and water.
![Page 28: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/28.jpg)
13. TRUE
![Page 29: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/29.jpg)
14. TRUE or FALSE
• pH is a physical property
![Page 30: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/30.jpg)
14. True
![Page 31: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/31.jpg)
15. SHORT ANSWER
• When heat is released during a process, that process is said to be ___.
![Page 32: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/32.jpg)
15. exothermic
![Page 33: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/33.jpg)
16. SHORT ANSWER
• Why are most skin and hair care products pH balanced?
![Page 34: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/34.jpg)
16. To be more compatible with the pH of skin and hair
![Page 35: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/35.jpg)
17. TRUE or FALSE
• pH balanced skin and hair care products cannot hurt the skin and hair
![Page 36: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/36.jpg)
17. FALSE
• pH balancing does not automatically make the product better for the skin and hair; pH blanced products may still contain allergens or irritants
![Page 37: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/37.jpg)
18. TRUE or FALSE
• In pure water the hydrogen (hydronium) ion concen-tration is equal to the hydroxide ion concentration.
![Page 38: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/38.jpg)
18. TRUE
![Page 39: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/39.jpg)
19. SHORT ANSWER
• Would an aqueous solution that causes the cuticle scales to lie down and become smooth be more likely to be acidic or basic?
![Page 40: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/40.jpg)
19. acidic
• Mildly acidic solutions cause the hair to ‘harden’ (cuticle scales to lie down)
![Page 41: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/41.jpg)
20. MULTIPLE CHOICE
The hydrogen ion concentration of a strong acid is ___ than that of pure water.
A.Equal to
B.More than
C.Less than
![Page 42: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/42.jpg)
20. B
• The stronger the acid the more H+ the acid has compared to that of water
![Page 43: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/43.jpg)
21. SHORT ANSWER
• Name two salon services that depend on oxidation-reduction reactions.
![Page 44: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/44.jpg)
21.
Bleachingpermanent waving
tintingrelaxing
![Page 45: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/45.jpg)
22. MULTIPLE CHOICE
• When water ionizes, it splits into ___.
• A. 2 hydroxide ions
• B. 2 hydrogen (hydronium) ions
• C. 2 hydroxide and 2 hydronium ions
• D. 1 hydroxide and 1 hydronium ion
• E. 2 hydronium and 1 hydroxide ion
![Page 46: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/46.jpg)
22. D
• H2O → H+ + OH –
![Page 47: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/47.jpg)
23. SHORT ANSWER
• When a substance is oxidized, what 2 things may happen?
![Page 48: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/48.jpg)
23.
The substance may:
gain oxygenor
lose hydrogen
![Page 49: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/49.jpg)
24. SHORT ANSWER
• A substance that releases oxygen is a(n) ___.
![Page 50: Test Review for pH and Redox](https://reader030.fdocuments.us/reader030/viewer/2022032805/5681328d550346895d992582/html5/thumbnails/50.jpg)
24. Oxidizing agent