Chapter 4 - Acids and redox

Question 1

Strong acid

Answer 1

an acid that dissociates completely in solution (aqueous) by releasing all of its hydrogen atoms into solution as H+ ions

Question 2

Weak acid

Answer 2

an acid that dissociates only partially in solution (aqueous) by releasing a small proportion of its hydrogen atoms into solutions as H+ ions

Question 3

Base

Answer 3

a compound that neutralises an acid to form a salt

Question 4

Alkali

Answer 4

a type of base that dissolves in water forming hydroxide ions OH-(aq) ions

Question 5

Titration

Answer 5

a technique used to accurately measure the volume of one solution that reacts exactly with another solution

Question 6

Standard solution

Answer 6

a solution of known concentration

Question 7

Oxidation number

Answer 7

a measure of the number of electrons that an atom uses to bond with atoms of another element

Question 8

Redox reaction

Answer 8

a reaction involving reduction and oxidation

Question 9

Reduction

Answer 9

gain of electrons or a decrease in oxidation number

Question 10

Oxidation

Answer 10

loss of electrons or an increase in oxidation number