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What is the pH of a neutral solution?

• 0

• 14

• 7

• 3

What color does litmus paper turn in an acidic solution?

• Blue

• Green

• Red

• Yellow

What is the main characteristic of a base?

• Has a pH of 7

• Turns litmus red

• Contains H+ ions

• Turns litmus blue

What gas is produced when an acid reacts with a metal carbonate?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon dioxide

Which indicator shows a range of colors depending on pH?

• Litmus

• Methyl orange

• Universal Indicator

• Phenolphthalein

Which of the following is a characteristic reaction of acids?

• Reacts with metals to produce hydrogen

• Reacts with bases to produce hydroxide

• Reacts with water to produce oxygen

• Reacts with salts to produce acids

Which of the following can be mixed together as starting materials to prepare calcium chloride?

• calcium nitrate + sodium chloride

• calcium carbonate + silver chloride

• calcium sulfate + sulfuric acid

• calcium carbonate + hydrochloric acid

What is the result of neutralizing an acid with a base?

• Salt and gas

• Gas and water

• Salt and water

• Only water

Which of the following is a strong alkali?

• Sodium hydroxide

• Calcium carbonate

• Ammonium hydroxide

• Copper sulfate

acids have a PH of....

• 7

• below 7

• higher than 7