Acids, Bases, Salts Quiz

What are the properties of acids?

• Acids have a sweet taste

• Acids have a sour taste, turn blue litmus paper red, react with metals to produce hydrogen gas, and have a pH less than 7.

• Acids do not react with metals

• Acids turn red litmus paper blue

What are the properties of bases?

• Bases accept protons, donate pairs of electrons, have a bitter taste, feel slippery, turn red litmus paper blue, and have a pH greater than 7.

• Bases donate protons

• Bases have a sweet taste

• Bases turn blue litmus paper red

Provide examples of common bases.

• Sulfuric acid (H2SO4)

• Carbon dioxide (CO2)

• Sodium hydroxide (NaOH), ammonia (NH3), potassium hydroxide (KOH)

• Hydrochloric acid (HCl)

Explain what happens in a neutralization reaction.

• A base reacts with an acid to form oxygen and a salt.

• An acid reacts with a base to form carbon dioxide and water.

• A neutralization reaction involves the combination of two acids.

• An acid reacts with a base to form water and a salt.

How is the pH scale used to measure acidity and basicity?

• The pH scale uses colors to determine the acidity of a solution.

• The pH scale measures temperature instead of acidity and basicity.

• The pH scale is used to measure acidity and basicity by indicating whether a solution is acidic (pH < 7), neutral (pH = 7), or basic (pH > 7).

• The pH scale categorizes solutions as sweet, sour, or salty.

What is the pH range for acids on the pH scale?

• 2 to 6.99

• 0 to 8.99

• 1 to 7.99

• 0 to 6.99

What is the pH range for bases on the pH scale?

• Less than 7

• Greater than 7

• Equal to 7

• Between 0 and 7

What is the pH of a neutral substance?

• 5

• 8

• 7

• 10

Choose the correct answer for chemical equation on acid-base reaction

• Acid + Base gives Salt + Water

• Acid + Base gives neutral solution

• HCL + (NaOH) gives (NaCl) + H2O

• None of them

Which one of the following is correct property of turmeric indicator

• It turns blue in acidic and red in basic

• It turns red in acidic and blue in basic

• It remains colourless in acidic and red in basic

• It changes to green in all cases (acidic, basic or neutral)