Soap is a weak base. What is true about the taste of bases?
they taste sour
they taste sweet
they taste bitter
they taste salty
3. Multiple Choice
10 seconds
1 pt
Explain what happens when a strong acid and a strong base are poured into the same container.
they form separate layers
they mix physically but not chemically
they break apart into separate elements
they react chemically to form a salt
4. Multiple Choice
30 seconds
1 pt
When dissolved in water, bases produce:
acids
salts
hydrogen ions
hydroxide ions
5. Multiple Choice
30 seconds
1 pt
Which of these solutions is an acid?
Dish Soap: pH of 12
Tomato Soup: pH of 4
Baking Soda: pH of 9
Drain Cleaner: pH of 14
6. Multiple Choice
1 minute
1 pt
What does the pH scale measure?
the concentration of acids and bases
the malleability of a metal
the temperature of the water in a swimming pool
the amount of phosphorus in a compound
7. Multiple Choice
1 minute
1 pt
Compounds form when _______________.
atoms of one element bond together
atoms of two or more elements bond together
molecules of one element are mixed together
molecules of two or more elements are mixed together
8. Multiple Choice
1 minute
1 pt
The pH of vinegar is 2.5. Vinegar is a _____________.
strong acid
strong base
weak base
weak acid
9. Multiple Choice
1 minute
1 pt
Which of the following is true about acids and bases?
The lower the pH, the stronger the acid
the higher the pH, the stronger the acid
The lower the pH, the more neutral the acid
The higher the pH, the weaker the base
10. Multiple Choice
1 minute
1 pt
Which type of ion does a base produce when it is dissolved in water?
oxide
oxygen
hydrogen
hydroxide
11. Multiple Choice
1 minute
1 pt
Which statement is true when acids and bases are mixed together?
acids become stronger
bases become stronger
there is no change
they neutralize each other
12. Multiple Choice
30 seconds
1 pt
Ranging from 0 to 14, a pH value indicates how acidic or basic a solution is. Which of these pH values would be a strong acid?
2
6
9
13
13. Multiple Choice
30 seconds
1 pt
What is the pH of water?
0
4
7
14
14. Multiple Choice
1 minute
1 pt
Williams collected a rain sample and measured its pH to be 5.6. What does this mean?
the rain water is a weak base
the rain water is neutral
the rain water is a strong acid
the rain water is a weak acid
15. Multiple Choice
1 minute
1 pt
What does a pH of 1 indicate about a liquid?
it is a very strong base
it is a weak base
it is a weak acid
it is a strong acid
16. Multiple Choice
1 minute
1 pt
Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution. If you test a base with litmus paper, it will turn ____________.
purple
red
blue
pink
17. Multiple Choice
30 seconds
1 pt
What is the pH of a neutral substance?
0
5
7
10
18. Multiple Choice
45 seconds
1 pt
Which of these pH values would indicate that a solution is a weak base?
4
5.6
8
13
19. Multiple Choice
30 seconds
1 pt
When dissolved in water, acids produce:
bases
salts
hydrogen ions
hydroxide ions
20. Multiple Choice
30 seconds
1 pt
Any substance that produces hydroxide ions in water is known as _____________.