Chromium forms the compound chromium(III) sulfate.
What does the (III) represent?
the charge on a sulfate ion
the number of chromium ions combined with one sulfate ion
the number of sulfate ions combined with one chromium ion
the oxidation state of chromium
D
Ethanol can be turned into ethanoic acid by passing it over hot copper(II) oxide.
What is this type of reaction?
precipitation
redox
thermal decomposition
neutralisation
B
When heated strongly, silicon(IV) oxide reacts with carbon.
Which term describes what happens to silicon(IV) oxide?
thermal decomposition
neutralisation
oxidation
reduction
D