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Reading a pH Scale (Grade 7)

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Reading a pH Scale

Use the pH scale to answer the questions.
pH Scale
1. 
Tomato juice is more acidic than vinegar.
  1. True
  2. False
2. 
Pure water is neutral.
  1. True
  2. False
3. 
Toothpaste is more basic than ammonia.
  1. True
  2. False
4. 
Stomach acid is more acidic than vinegar.
  1. True
  2. False
5. 
Bleach is more basic than baking soda.
  1. True
  2. False
6. 
Apple juice has a pH of about 3. Apple juice is more acidic than vinegar.
  1. True
  2. False
7. 
Bleach is a
  1. weak acid
  2. weak base
  3. strong acid
  4. strong base
8. 
Saliva is a
  1. weak acid
  2. weak base
  3. strong acid
  4. strong base
9. 
Toothpaste is a
  1. weak acid
  2. weak base
  3. strong acid
  4. strong base
10. 
Milk is slightly acidic. Which of the following substances most likely has a pH similar to milk?
  1. saliva
  2. bleach
  3. vinegar
  4. toothpaste

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