Acids, alkalis (bases) and the pH scale
7th grade (Year 8 in England) · 16 questions · Common Core: NGSS.MS-PS1-2 · England: KS3 Chemistry: Chemical reactions (acids and alkalis)
Name
Date
Score/ 16
Question 1
What happens to blue litmus paper in an acid?
- A. It turns red
- B. It turns green
- C. It stays blue
- D. It turns purple
Question 2
A solution has a pH of 0. Is it acidic, neutral or alkaline (basic)?
- A. acid
- B. neutral
- C. alkali (base)
Question 3
Acids and alkalis: which statement is NOT true?
- A. Alkalis are bases that dissolve in water.
- B. A pH of 1 is a weak acid.
- C. Strong acids and alkalis can be corrosive, so eye protection is needed.
- D. Acids have a pH below 7.
Question 4
Universal indicator turns red in a solution. What does this tell you?
- A. It is pure water
- B. It is neutral
- C. It is a strong alkali
- D. It is a strong acid
Question 5
A solution has a pH of 11. Is it acidic, neutral or alkaline (basic)?
- A. acid
- B. neutral
- C. alkali (base)
Question 6
Acids and alkalis: which statement is NOT true?
- A. Pure water has a pH of 7.
- B. A pH of 1 is a weak acid.
- C. Alkalis are bases that dissolve in water.
- D. Strong acids and alkalis can be corrosive, so eye protection is needed.
Question 7
Which of these is an acid?
- A. oven cleaner
- B. soap
- C. pure water
- D. lemon juice
Question 8
A solution has a pH of 10. Is it acidic, neutral or alkaline (basic)?
- A. acid
- B. neutral
- C. alkali (base)
Question 9
Acids and alkalis: which statement is NOT true?
- A. Alkalis are bases that dissolve in water.
- B. Acids have a pH below 7.
- C. All acids are dangerous.
- D. Pure water has a pH of 7.
Question 10
Which of these is an acid?
- A. lemon juice
- B. pure water
- C. soap
- D. oven cleaner
Question 11
A solution has a pH of 4. Is it acidic, neutral or alkaline (basic)?
- A. acid
- B. neutral
- C. alkali (base)
Question 12
Acids and alkalis: which statement is NOT true?
- A. Strong acids and alkalis can be corrosive, so eye protection is needed.
- B. Alkalis are bases that dissolve in water.
- C. Acids have a pH below 7.
- D. All acids are dangerous.
Question 13
Which of these is an alkali (base)?
- A. vinegar
- B. hydrochloric acid
- C. sodium hydroxide solution
- D. orange juice
Question 14
A solution has a pH of 0. Is it acidic, neutral or alkaline (basic)?
- A. acid
- B. neutral
- C. alkali (base)
Question 15
Acids and alkalis: which statement is NOT true?
- A. All acids are dangerous.
- B. Strong acids and alkalis can be corrosive, so eye protection is needed.
- C. Pure water has a pH of 7.
- D. Alkalis are bases that dissolve in water.
Question 16
Which of these is an acid?
- A. pure water
- B. oven cleaner
- C. soap
- D. lemon juice
Write your answers right on the page. · Free from eurekami.com