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- 1. Multiple-choice1 minute1 ptAcids react withwater to produce bases and saltssalts to produce bases and waterneither bases, salts nor waterbases to produce salts and water
- 2. Multiple-choice1 minute1 pt
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
- 3. Multiple-choice1 minute1 pt
HF is...
an acid
a base
a salt
an ionic compound
- 4. Multiple-choice1 minute1 pt
KOH is ...
an acid
a base
a salt
an ionic compound
- 5. Multiple-choice1 minute1 ptWhich 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.
- 6. Multiple-choice1 minute1 pt
Which of these pH values represent an acid?
4
8
10
12
- 7. Multiple-choice1 minute1 pt
When acids react with metals, they produce hydrogen gas and salt.
True
False
- 8. Multiple-choice1 minute1 pt
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
- 9. Multiple-choice1 minute1 pt
When an acid is dissolved in water, it turns red litmus paper blue.
True
False
- 10. Multiple-choice1 minute1 pt
Which of the following is an acid?
vinegar
bleach
sugar in water
starch in water
toothpaste in water
- 11. Multiple-choice1 minute1 pt
Which of the following is a property of a base?
bitter taste
reacts with metals
salty
sour taste
- 12. Multiple-choice1 minute1 pt
All bases have a sour taste.
True
False
- 13. Multiple-choice1 minute1 pt
The strongest bases have pH values close to
0
14
7
5
- 14. Multiple-choice1 minute1 pt
If the substance is neutral, what would the pH be?11
3
5
7
9
11
- 15. Multiple-choice1 minute1 ptHolly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beakeris a base.has a neutral pH.
is an acid.does not have a pH. - 16. Multiple-choice1 minute1 ptWhich is the stronger acid?pH 1pH 4pH 8pH 13
- 17. Multiple-choice1 minute1 pthydrochloric acidHClHClOH3ClO3HClO3
- 18. Multiple-choice1 minute1 ptNaOHsodium oxidesodium hydrogensodium hydroxide
- 19. Multiple-choice1 minute1 ptExplain what happens when a strong acid and a strong base are poured into the same container.they form separate layersthey mix physically but not chemicallythey break apart into separate elementsthey react chemically to form a salt
- 20. Multiple-choice1 minute1 ptWhen dissolved in water, bases produce:acidssaltshydrogen ionshydroxide ions
