Acids

Question 1

What is a strong acid?

Answer 1

An acid that releases all of its hydrogen ions into the solution and completely dissociates

Question 2

What is a weak acid?

Answer 2

An acid that releases a small number of its hydrogen ions into the solution and partially dissociates

Question 3

What is a base?

Answer 3

A compound that neutralises an acid, by accepting a hydrogen ion to form a salt

Question 4

What is an alkali?

Answer 4

A type of base that dissolves in water forming hydroxide ions

Question 5

What is a salt?

Answer 5

The product of a reaction in which the H+ ions from the acid are replaced by the metal or ammonium ion

Question 6

What is the reaction between a metal and an acid?

Answer 6

Metal + acid —–> salt + hydrogen

Question 7

What is the reaction between a metal oxide and an acid?

Answer 7

Metal oxide + acid —–> salt + water

Question 8

What is the reaction between a metal hydroxide and an acid?

Answer 8

Metal hydroxide + acid —–> salt + water

Question 9

What is the reaction between a metal carbonate and an acid?

Answer 9

Metal carbonate + acid —–> salt + water + carbon dioxide

Question 10

What is the reaction between ammonia and an acid?

Answer 10

Ammonia + acid —–> ammonium salt

Question 11

What is uncertainty?

Answer 11

Half the smallest possible unit you can make

Question 12

What is the uncertainty of a 100cm3 measuring cylinder (markings every 1cm3)?

Answer 12

0.5

Question 13

What is the equation for percentage uncertainty?

Answer 13

Uncertainty of equipment
————————————- X100
size of measurement

Question 14

What do you have to do to the uncertainty measurment when you do more than one reading?

Answer 14

Multiply it by the number of readings

Question 15

What should you do if the acid is di/tribasic?

Answer 15

Double/triple the moles of the base