Acids and Bases Quiz

What is the most well-known indicator used to test acids and alkalis?

• Phenolphthalein

• Methyl orange

• Litmus

• Bromothymol blue

What color does litmus turn in an acidic solution?

• Green

• Red

• Blue

• Yellow

What ions do acids produce when they dissolve in water?

• OH⁻ ions

• Na⁺ ions

• H⁺ ions

• Cl⁻ ions

What is the chemical formula for the dissociation of hydrochloric acid in water?

• HCl → H⁺ + Cl⁻

• HCl → H₂ + Cl₂

• HCl → H₂O + Cl₂

• HCl → H⁺ + OH⁻

What is a base that dissolves in water called?

• Acid

• Alkali

• Salt

• Metal

What is the result of a neutralization reaction between an acid and an alkali?

• Acid and base

• Salt and water

• Hydrogen and oxygen

• Metal and non-metal

What type of ions do alkalis produce in water?

• H⁺ ions

• OH⁻ ions

• Na⁺ ions

• Cl⁻ ions

What is the reaction called when acids react with metals to produce a salt and hydrogen gas?

• Neutralization

• Combustion

• Displacement

• Precipitation

What is the term for the bubbling observed during the reaction of acids with metals?

• Endothermic

• Exothermic

• Neutralization

• Precipitation

What are alkalis commonly known as?

• Metal oxides

• Metal hydroxides

• Metal carbonates

• Metal sulfates