Unit 5

Question 1

One mole

Answer 1

contains 6.02 x 10^23 atoms/molecules ( avogadro’s number)

Question 2

Oxidation

Answer 2

loss of electrons from an atom

Question 3

What results in oxidation

Answer 3

• gain of oxygen atoms
  -loss of hydrogen atoms

Question 4

Reduction

Answer 4

the gain of electrons by an atom

Question 5

What results in reduction?

Answer 5

-loss of oxygen atoms
- gain of hydrogen atoms
this is called a redox reaction and it has two components, one that is oxidized and one that is reduced. It involves the transfer of electrons from one element to another

Question 6

limiting reactant

Answer 6

the reactant that is completely used up in a reaction

Question 7

reducing agent

Answer 7

a compound that is oxidized while causing another compound to be reduced