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20 questions
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- 1. Multiple Choice
Which of these pH values represent an acid?
4
8
10
12
- 2. Multiple Choice
If I add more chicken soup to this setup, what will happen to the pH?
It will increase and get closer to 7
It will decrease and get closer to 0
It will stay the same and not change
- 3. Multiple Choice
If I add more water to this setup, what will happen to the pH?
It will increase and get closer to 7
It will decrease and get closert to 0
It will stay the same and not change
- 4. Multiple Choice
Milk is a very weak acid. What might its pH value be?
6.5
7.8
4.2
12.2
- 5. Multiple Choice
When acids react with metals, they produce hydrogen gas and salt.
True
False
- 6. Multiple Choice
When an acid is dissolved in water, it turns red litmus paper blue.
True
False
- 7. Multiple Choice
Which of the following are properties of acids?
They conduct electricity when dissolved in water
They taste sour
They react with metals to produce hydrogen gas
All of the answer choices are correct
- 8. Multiple Choice
Which of the following is an acid?
vinegar
bleach
sugar in water
starch in water
toothpaste in water
- 9. Multiple Choice
An acid is a solution that contains __________ ions dissolved in water.
positive
negative
- 10. Multiple Choice
The pH value of an acid represents its __________ of positive ions in the solution
amount
concentration
color
charge
- 11. Multiple Choice
Which of the following is a property of a base?
bitter taste
reacts with metals
salty
sour taste
- 12. Multiple Choice
Bases have many uses. They are mainly used to make
cleaning products
soaps
concrete
all of the answer choices
- 13. Multiple Choice
The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.
True
False
- 14. Multiple Choice
All bases have a sour taste.
True
False
- 15. Multiple Choice
Which of the following pH values represents a base?
2.1
4.6
6.8
8.1
- 16. Multiple Choice
The strongest bases have pH values close to
0
14
7
5
- 17. Multiple Choice
Which of the following is a base?
baking soda in water
orange juice
vinegar
lemonade
- 18. Multiple Choice
Ocean water is only slightly basic. What might its pH value be?
5
8
12
2
- 19. Multiple Choice
Bases turn blue litmus paper red.
True
False
- 20. Multiple Choice
If the substance is neutral, what would the pH be?11
3
5
7
9
11
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