NA Sci (Chem) Acids and Bases

What is formed when acids react with bases?

• salt and water

• salt and hydrogen

• salt, carbon dioxide and water

• salt, ammonia and water

What is formed when acids react with reactive metals?

• salt and water

• salt and hydrogen

• salt, carbon dioxide and water

• salt, ammonia and water

What is formed when acids react with metal carbonates?

• salt and water

• salt and hydrogen

• salt, carbon dioxide and water

• salt, ammonia and water

What is formed when alkalis are heated with ammonium salts?

• salt, carbon dioxide and water

• salt and hydrogen

• salt, ammonia and water

• salt and water

What is a positive result for hydrogen?

• Lighted splint extinguishes with a 'pop' sound.

• A white precipitate forms in limewater.

• Moist red litmus paper turns blue.

• Gas relights a glowing splint.

What is a positive result for carbon dioxide?

• Lighted splint extinguishes with a 'pop' sound.

• A white precipitate forms in limewater.

• Moist red litmus paper turns blue.

• Gas relights a glowing splint.

What is a positive result for ammonia?

• Lighted splint extinguishes with a 'pop' sound.

• A white precipitate forms in limewater.

• Moist red litmus paper turns blue.

• Gas relights a glowing splint.

What is a positive result for oxygen?

• Lighted splint extinguishes with a 'pop' sound.

• A white precipitate forms in limewater.

• Moist red litmus paper turns blue.

• Gas relights a glowing splint.

What do acids taste like?

• Sour

• Bitter

What do alkalis taste like?

• Bitter

• Sour