Chapter 5

Question 1

Chemical equation

Answer 1

A shorthand for a chemical change, using symbols and formulas instead of words

Question 2

Reactants

Answer 2

Substances to the left of the arrow

Question 3

Products

Answer 3

Substances to the right of the arrow

Question 4

Formula mass

Answer 4

The sum of masses of the atoms represented in the formula of a substance

Question 5

Molar mass

Answer 5

The mass of one mole of a substance has the same number as formula mass and atomic mass. It is expressed in g/ mol

Question 6

Stoichiometry

Answer 6

“Measuring elements”. Involves the quantitative relationship

Question 7

Aqueous solution

Answer 7

Solution that has water in the solvent.

Question 8

Concentrated solution

Answer 8

Has a relatively large amount of solute compared to solvent

Question 9

Dilute solution

Answer 9

Only has a little solute in a large amount of solvent

Question 10

Percent volume

Answer 10

(Volume of solute/ volume of solution) 100%

Question 11

Percent mass

Answer 11

(Mass of solute/ mass of solution) 100%

Question 12

Steps in a stoichiometric equation

Answer 12

1. Need a balanced equation
2. Need the molecular mass
3. Use stoichiometry (the coefficients)
4. Convert it to weight