Acids and bases

Which of the following is not a property of acids?

• Caustic

• Hydrogen atoms in their molecules

• Sour taste

• Turns blue litmus paper red

Which of the following is not a property of bases?

• Caustic

• Neutralise acids

• Soapy, slimy feel

• Turns blue litmus paper red

Most molecules in a concentrated acid release H+ ions whereas only a few molecules in a dilute acid release H+ ions

• True

• False

Dilute acids....

• Can be consumed

• Have a small amount of water and large amount of acid

• Have a large amount of water and small amount of acid

• Release OH^- molecules

Lactic acid is an example of a

• Strong acid

• Strong base

• Weak base

• Weak acid

Metal + acid -----> _____________ + ______________

• Base, salt

• Salt, hydrogen

• Carbon dioxide, air

• Water, air

Carbonate + acid -----> _____________ + ______________ + _____________

• Salt, carbon dioxide, water

• Carbon dioxide, hydrogen, water

• Base, helium, air

• Salt, hydrogen, water

Sodium carbonate (or washing soda) is a _________

• Acid

• Base

Acids release OH- ions, acids release H+ ions

• True

• False

What is the purpose of conducting a 'pop' test?

• To test whether a substance is an acid or a base

• To test whether carbon dioxide was produced

• To test whether hydrogen gas was produced

• To have some fun with matches