Which substance combines with iron in the presence of water to form rust? (1 point)
• oxygen
• nitrogen
• carbon dioxide
• acid
oxygen
Which process is most likely responsible for the formation of limestone caves? (1 point)
• hydrolysis
carbonation
• oxidation
abrasion
carbonation
Which option best describes hydrolysis? (1 point)
• water reacting chemically with minerals in rock
• oxygen in water combining chemically with substances in rock
• carbon dioxide reacting with water to form an acid that dissolves minerals in rock
• hydrogen in water combining chemically with substances in rock
water reacting chemically with minerals in rock
Which type of region would be most likely to support chemical weathering? (1 point)
• a temperate region with warm summers and cold winters
• a desert region with very little rain
• a tropical region that is hot and humid all year long
• a polar region that is cold and dry all year long