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- 1. Multiple ChoiceThe pH scale is a range from:1-70-141-51-20
- 2. Multiple ChoiceA(n) ______ is a substance with a pH less than 7AcidAlkalineBaseBuffer
- 3. Multiple ChoiceA(n) _______ is a substance with a pH greater than 7.BaseAcidBufferWater
- 4. Multiple Choice
What is the only substance with a neutral pH of 7?
Milk
Orange Juice
Baking Soda
Blood
- 5. Multiple ChoiceComplete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.lowerhigherthe samenone of the above - 6. Multiple Choice
In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?
Both of the solution are Bases
Both of the solution are Acids
The Baking soda is an acid and the Bleach is a base
The baking soda is a base and the Bleach is an Acid.
- 7. Multiple Choice
If you have a substance with a pH of 7.1 it is .....
Acid
Base
Neutral
- 8. Multiple Choice
Water has a neutral because
it has more H+ ions than OH-
it has more OH- ions than H+
it does not produce any ions
it has an equal amount of H+ and OH- in solution
- 9. Multiple Choice
According to the pH range which substance is more acidic than lemon juice
Hydrochloric acid
NaOH
Blood
Vinegar
- 10. Multiple Choice
Which of the following is the strongest base?
4
14
8
15
- 11. Multiple Choice
Which of the following is the strongest acid?
1
5
3
8
- 12. Multiple ChoiceWhich solution releases H+ in solution?BaseAcidBufferWater
- 13. Multiple ChoiceThis substance releases OH- into solutionAcidBaseNeutral
- 14. Multiple ChoiceA solution with a pH of 3.6 would be...AcidBaseNeutralAcid and Base
- 15. Multiple ChoiceA solution with a pH of 8.6 would be...AcidBaseNeutralAcid and Base
- 16. Multiple ChoiceTastes SourAcidsBasesSaltsAll
- 17. Multiple ChoiceTastes bitter.AcidsBasesSaltsAll
- 18. Multiple ChoiceFeels slippery.AcidsBasesAll
- 19. Multiple Choice
Which is NOT a property of a base?
Tastes sour
Slippery
Bitter taste
Turns red litmus to blue
- 20. Multiple Choice
What is true when acids and bases neutralize each other. Select all that apply.
The concentration of H+ and OH- is the same
Salt Water is produced
The concentration of H+ is higher
The concentration of OH- is higher
- 21. Multiple Choice
If a substance is acidic, what could be added to raise the pH?
HCl
Blood
Vinegar
Baking Soda
- 22. Multiple ChoiceBases will turn litmus paper __________, while acids will turn litmus paper __________.blue.....redred.....bluepink.........colourlesscolourless..........pink
- 23. Multiple ChoiceThe pH of a strong acid would be:1-25-68-912-13
- 24. Multiple ChoiceThe pH of a strong base would be:1-25-68-913-14
- 25. Multiple ChoiceThe pH of a weak base would be:1-25-68-912-13
- 26. Multiple ChoiceThe pH of a weak acid would be:1-25-68-912-13
- 27. Multiple Choice
How would you classify the substance being tested?AcidBaseBothNeither - 28. Multiple Choice
Which of the following is true about the pH scale? (Select ALL that apply)
Scale ranges from 0-10
Scale ranges from 0-14
Lower numbers are acids and higher numbers are bases
Lower numbers are bases and higher numbers are acids
pH 0 is neutral
- 29. Multiple Choice
What is the main reason for rainwater to become acidic, having a pH less than 5.0.
too much limestone
too much fossil fuels being burned
too much runoff of sediment from construction
too much runoff of fertilizers
- 30. Multiple ChoiceAcids react withwater to produce bases and saltssalts to produce bases and waterneither bases, salts nor waterbases to produce salts and water
- 31. Multiple Choice
A substance is found to have the following characteristics:
Very bitter taste
Feels slippery to the touch
Produces OH- ions when dissolved in water
In what category would the substance be classified?
acid
base
enzyme
fatty acid
- 32. Multiple ChoiceWhich of the following statements is correct?Blue litmus paper turns red when placed in a base.Red litmus paper turns blue when placed in a base.Blue litmus paper stays blue when placed in an acid.Red litmus paper stays red when placed in a base.
- 33. Multiple Choice
Phenolophalein turns from clear to pink when the pH turns
acidic
basic
saline
ionic
- 34. Multiple Choice
The strongest bases have pH values close to
0
14
7
5
- 35. Multiple Choice
Which of the following pH values represents a base?
2.1
4.6
6.8
8.1
- 36. Multiple Choice
Which of the following is the weakest base?
oven cleaner - 13.5
lemon juice - 2.5
soap - 10
blood - 7.4
- 37. Multiple Choice
Which of the following is the strongest acid?
oven cleaner - 13.5
lemon juice - 2.5
soap - 10
blood - 7.4
- 38. Multiple Choice
Solutions that have more OH– ions than H+ ions are
acids
bases
enzymes
neutral
- 39. Multiple Choice
What is the colour of litmus in an acid ?
Pink
Yellow
Red
Colourless
- 40. Multiple Choice
What is the colour of phenolphthalein an acid?
Pink
Yellow
Orange
Colourless
- 41. Multiple Choice
What is the colour of litmus in a base ?
Pink
Blue
Red
Colourless
- 42. Multiple Choice
What is the color of phenolphthalein in a base ?
Pink
Blue
Red
Colorless
- 43. Multiple Choice
Which of the following is a positive for an acid
Blue Litmus paper staying blue
Red Litmus paper staying red
Phenolphthalein being pink
- 44. Multiple Choice
Which of the following is a positive for an acid
Red Litmus paper turning blue
Blue Litmus paper staying blue
Phenolphthalein being clear
Bromothymol blue turning blue
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