S1: SOLUTIONS & DILUTIONS

Question 1

One or more molecular species

dissolved in water constitutes as ____

Answer 1

solution

Question 2

The molecules dissolved in water are called ______,

while the water is referred to as ___.

Answer 2

solutes

solvent

Question 3

The “parts” in a percent solutions usually refer to ____. Thus, the 10% glucose solution would
consist of 10 grams of glucose for every 100 grams of
solution (10 g glucose in 90 g H2O).

Answer 3

weight

Question 4

solutions are often described by their solute concentration using the _______

Answer 4

Molar designation

Question 5

______ are simply the number of moles of solute in one

liter of solution.

Answer 5

Molar solutions

Question 6

In biology lab work, concentrations are often given in micro-moles or ____. It is one millionth of a mole per liter, or 1 x 10-6 M.

Answer 6

µM

Question 7

There are two kinds of pipettes commonly used in laboratories:

The “______” type delivers the
desired amount when completely emptied

What is the other type delivers the desired amount when the liquid level reaches the last calibration mark. This type is more
accurate but the “____” type is more convenient

Answer 7

blow out

standard