The "Base"Ics Of pH
10 Questions
| Total Attempts: 128
This quis was designed to test your knowledge of the South Caroline Seventh grade Science standards on pH.
Questions and Answers
- 1.____________ are substances that have a sour taste, are corrosive to metals, and have a pH less than 7.
- A.
Acids
- B.
Bases
- C.
Neutrals
- D.
Solutions
- 2.________ are substances that have a bitter taste, a slippery feel, and a pH greater than 7.
- A.
Acids
- B.
Bases
- C.
Neutrals
- D.
Solutions
- 3.A substance is determined to have a pH of 3. This substance must be a(n) ________.
- A.
Acid
- B.
Base
- C.
Neutral
- D.
Solution
- 4.Frederick tests the pH of an unidentified substance and finds its pH to be 11. This substance must be a(n) ________.
- A.
Acid
- B.
Base
- C.
Neutral
- D.
Solution
- 5.Pure water is a ________ because it has a pH of 7.
- A.
Acid
- B.
Base
- C.
Neutral
- D.
Solution
- 6.A student uses blue litmus paper to determine the relative pH of a substance. The litmus paper turns red when it comes in contact with the substance. The student can determine that this substance is a(n) ________.
- A.
Acid
- B.
Base
- C.
Neutral
- D.
Solution
- 7.A student determines that a solution is an acid after using litmus paper in the solution. The litmus paper must have turned what color in order for the students to draw this conclusion?
- A.
Blue
- B.
Magenta
- C.
Orange
- D.
Red
- 8.A student determines that a substance must be either a neutral or an acid after using phenolphthalein as an indicator. The phenolphthalein must have done what in the presence of the solution?
- A.
The phenolphthalien turned red.
- B.
The phenolophthalein turned magenta.
- C.
The phenolphthalien remained blue.
- D.
The phenolphthalein remained clear.
- 9.Phenolphthalein turns bright magenta in the presence of an unknown substance. The substance must be a ______________.
- A.
Strong acid
- B.
Strong base
- C.
Weak acid
- D.
Weak base
- 10.The closer a substance's pH is to 7 the _________ the pH of the substance is.
- A.
Heavier
- B.
Lighter
- C.
Stronger
- D.
Weaker
This quiz will evaluate your knowledge on the basic concepts of Acids, Bases and pH.
Explanations to the correct answers will be provided as each question is answered.
Questions: 11 | Attempts: 5006 | Last updated: Mar 21, 2022
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Sample QuestionPH is a measure of ____ ions.
How well do you know the pH scale? Are you able to get full marks in this quiz? Let's begin and see how well you do!
Questions: 8 | Attempts: 2544 | Last updated: Mar 21, 2022
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A polyatomic ion is seen as a molecule that has been ionized by gaining or losing electrons. In a polyatomic ion, the group of covalently bonded atoms carries a net charge because the total number of electrons in the molecule is...
Questions: 10 | Attempts: 58888 | Last updated: Mar 22, 2022
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