1.7 - Redox

Question 1

What is an oxidation number?

Answer 1

The number of electrons and atom uses to bond with any other atom

Question 2

What is the oxidation number of an uncombined element?

Answer 2

Zero

Question 3

What is the oxidation number of a combined oxygen?

Answer 3

-2

Question 4

What is the oxidation number of oxygen in peroxides?

Answer 4

-1

Question 5

What is the oxidation number of combined hydrogen?

Answer 5

+1

Question 6

What is the oxidation number of hydrogen in metal hydrides

Answer 6

-1

Question 7

When an element has more than one stable oxidation number, how is it indicated?

Answer 7

With Roman numerals

Question 8

What are oxyanions?

Answer 8

Negative ions that have an element along with oxygen

Question 9

Define oxidation in terms of electron transfer and oxidation number

Answer 9

Loss of electrons
An increase in oxidation number

Question 10

Define reduction in terms of the electron transfer an oxidation number

Answer 10

Gain of electrons
Decrease in oxidation number

Question 11

What is a redox reaction?

Answer 11

A reaction in which both oxidation and reduction takes place