What are the products of a reaction between a metal and an acid?
Salt + hydrogen
Salt + water
Salt + water + carbon dioxide
A gas is produced when a metal carbonate reacts with an acid. How is the identity of this gas confirmed?
Relights a glowing splint
Ignites with a squeaky pop
Turns limewater milky
What products form in the reaction between copper carbonate and sulfuric acid?
Copper sulfate + carbon dioxide
Copper sulfate + carbon dioxide + water
Copper sulfate + water
What is the name of the salt produced by the reaction between copper carbonate and hydrochloric acid?
Copper sulfate
Copper chloride
Copper nitrate
What is the formula of the salt magnesium sulfate?
Mg2SO4
Mg(SO4)2
MgSO4
What is the formula for calcium hydroxide?
Ca(OH)2
CaOH
Ca2OH
Which method is used to remove excess insoluble reactant when making a salt?
Evaporation
Filtration
Crystallisation
Which indicator is used to estimate the pH of a solution?
Litmus
Methyl orange
Universal
Which of the following describes a weak acid?
An acid that has been diluted
An acid that only partly dissociates to produce H+ ions
An acid that fully dissociates to form H+ ions
If the concentration of hydrogen ions decreases by a factor of 10, what happens to the pH of the solution?
It increases by 1
It stays the same
It decreases by 1