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Ninth Grade (Grade 9) Acids and Bases Questions

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Grade 9 Acids and Bases
These are proton donators.
  1. buffers
  2. bases
  3. water molecules
  4. acids
Grade 9 Acids and Bases
Acidic solutions contain high concentrations of
  1. H+ ions
  2. OH- ions
  3. Water
  4. Oxygen
Grade 9 Acids and Bases
What is the pH of pure water?
  1. pH=0
  2. pH=14
  3. pH=7
  4. pH=5
Grade 9 Acids and Bases
Grade 9 Acids and Bases
Grade 9 Acids and Bases
What is the scale called that measures the strength of acids and bases?
  1. pH scale
  2. Acidity scale
  3. Corrosive scale
  4. Hydrogen scale
Grade 9 Acids and Bases
Dilute and concentrated refer to
  1. the concentration of a solution
  2. how much water is added to the solution
  3. how high the boiling point is
  4. none of the above
Grade 9 Acids and Bases
When a base is dissolved in water, what is released?
  1. [math]H^+[/math]
  2. [math]OH^-[/math]
  3. [math]CO_2[/math]
Grade 9 Acids and Bases
Listed below are common household ingredients with their pH value listed. Which one is the strongest Base?
  1. Baking Soda, pH=8.8
  2. Vinegar, pH=3.2
  3. Bleach, pH=13.1
  4. Oven Cleaner, pH=11.2
Grade 9 Acids and Bases
Grade 9 Acids and Bases
What is produced when an acid reacts with a base?
  1. a base and water
  2. water and ethane
  3. water and salt
  4. water only
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