Carbon Cycle, Greenhouse Effect, Global Warming, Ocean Acid.

Which factor puts CO₂ into the atmosphere?

• Combustion of fossil fuels

• Photosynthesis

• Fossilization

• Decomposition

The increased temperature of the earth due to global warming has decreased

• the rate of CO2 combustion

• the amount of CO2 in the atmosphere

• the size of polar ice caps

• the amount of cows

Which is true concerning Acids and Bases?

• Acids and bases don't react with each other

• acids mixed with bases neutralize each other

• acids mixed with bases make stronger bases

• acids mixed with bases make stronger acids

Neutral solutions have a pH of

• 0

• 1

• 7

• 14

True or False: A neutral solution has equal amounts of H+ and OH-

• True

• False

Which is true?

• pH less than 7 is basic; pH more than 7 is acidic

• pH less than 7 is acidic; pH more than 7 is basic

Vinegar fruit juice and soda are examples of:

• acids

• bases

NaOH may be found in drain cleaners and soaps. Is NaOH an acid or a base?

• acid

• base

• neutral

HCl is found in toilet bowl cleaners and in our stomachs. Is HCl and acid or a base?

• acid

• base

• neutral

Is pure water acidic, basic or neutral?

• acid

• base

• neutral