Soap improves the cleansing power of water, because soap molecules have two portions:
A. a hydrophobic tail and a hydrophilic head
B. a hydrophilic tail and a hydrophobic head
C. a sodium salt tail and a hypotonic head
D. a potassium salt tail and a hypertonic head
Answer:A
Soap improves the cleansing power of water, because soap molecules have two portions:
A. a hydrophobic tail and a hydrophilic head B. a hydrophilic tail and a hydrophobic head C. a sodium salt tail and a hypotonic head D. a potassium salt tail and a hypertonic head