Chapter 1

Question 1

SI units

Answer 1

units of measurement that are standard around the world;

ex. meter (m), kelvin (K), mole (mol), second (s), etc.

Question 2

ordinate

Answer 2

the y-axis of a graph

Question 3

abscissa

Answer 3

the x-axis of a graph

Question 4

solvent

Answer 4

the major species in a solution

Question 5

solute

Answer 5

the minor species in a solution

Question 6

concentration

Answer 6

states how much solute is contained in a given volume or mass of solution or solvent

Question 7

mole

Answer 7

avagadro’s number of particles

Question 8

Molarity

Answer 8

(M); number of moles of a substance per liter of solution;

formula: M = mol of solute / L of solution

Question 9

atomic mass

Answer 9

number of grams containing Avogadro’s number of atoms

Question 10

molecular mass

Answer 10

sum of atomic masses of the atoms in the molecules

Question 11

electrolyte

Answer 11

substances that dissociates into ions in solution

Question 12

strong vs. weak electrolytes

Answer 12

strong - mostly dissociate into ions in solution

weak - partially dissociate into ions in solution

Question 13

formal concentration

Answer 13

the molarity of a strong electrolyte

Question 14

formula mass

Answer 14

sum of atomic masses of all atoms in the formula

Question 15

Molality

Answer 15

(m) ; concentration expressed as moles of substance per kilogram of solvent;
formula: m = mol of solute / kg of solvent

Question 16

weight percent formula

Answer 16

wt% = mass of solute / mass of total solution/mixture x 100

Question 17

volume percent formula

Answer 17

vol% = vol of solute / vol of solution x 100

Question 18

density formula

Answer 18

d = mass / volume

Question 19

specific gravity formula

Answer 19

= density of substance / density of water at 4 celcius

Question 20

part per million

Answer 20

ppm = mass of substance / mass of sample x 10^6

Question 21

parts per billion

Answer 21

ppb = mass of substance / mass of sample x 10^9

Question 22

anhydrous

Answer 22

substance containing NO water

Question 23

stoichiometry

Answer 23

calculation of quantities of substances involved in a chemical reaction