B12 Bioc (2) Water and carbon

Which state of H₂O has the most hydrogen bonds per molecule?

• Liquid

• Solid

• Gas

Which property of water is explained by energy being used to break hydrogen bonds?

• Specific heat

• Cohesion

• Adhesion

• Solubility

Which property of water is explained by attraction between water molecules?

• Specific heat

• Cohesion

• Adhesion

• Solubility

Which property of water is explains surface tension?

• Specific heat

• Cohesion

• Adhesion

• Solubility

What stops ions from re-associating in aqueous solutions?

• Hydration shell

• Dehydration reaction

• Hydrolysis

• Ionization

pH is calculated as the -log of what

• hydrogen ion concentration

• hydrogen ion amount

• hydroxide ion concentration

• hydroxide ion amount

How does the amount of OH^- and H₃O⁺ compare in pure water?

• More H₃O⁺

• More OH^-

• Equal

How does the amount of OH^- and H₃O⁺ compare in an acid?

• More H₃O⁺

• More OH^-

• Equal

A base will have a pH

• Less than 7

• 7

• Higher than 7

What makes something a strong vs weak acid?

• Strong acids are in higher concentration

• Weaker acids are in higher concentration

• Stronger acids ionize completely

• Weaker acids ionize completely