When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.  If Mona fills up a cup with water and places that water into the freezer, what happens to the density of the water as it cools down increases or decreases?
increases

Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.  Compared to an item with few carbon atoms an item with many carbon atoms will boil faster or slower?
slower

Water near shore generally has more dissolved nutrients than water farther from shore.  Eric is swimming near shore. Tina is 100 meters out in the water. The water near Eric or Tina has fewer nutrients?
Tina