CCEA A-Level Chemistry A2 2 Analytical, Transition Metals and Electrochemistry overview quiz quiz

It forms at least one ion with a partly filled d sub-shell

It is an s-block element found in the first two groups of the table

It has a completely full d sub-shell in every one of its stable ions

It always shows a single fixed oxidation state of exactly +2

An ionic bond formed by full electron transfer

A dative covalent (coordinate) bond

A hydrogen bond between the ligand and the metal

A metallic bond with a sea of delocalised electrons

They reflect every wavelength of visible light equally back to the observer

They contain only s electrons, which by themselves absorb strongly across the visible range

The d-orbitals split, and electrons absorb visible light to move between the levels

The metal ions are simply very large and scatter the incoming light strongly

+1.00 V

-0.76 V

+0.34 V

0 V

Positive

Negative

Zero only

Equal to 1.23 V

The reaction is simply far too fast for any added indicator to keep up

Manganate(VII) is self-indicating, turning from purple to colourless

Starch is already present in the flask from the very start of the titration

The end point is located instead by measuring the pH of the mixture

At the very start, before any titrant has been added at all

Only after the end point has already clearly been passed

Near the end point when the solution is pale yellow

It is never used in an iodine-thiosulfate titration at all

Distance moved by the solvent divided by distance moved by the spot

The retention time of the spot

The mass of the spot divided by the solvent volume

Distance moved by the spot divided by distance moved by the solvent

The ratio of hydrogen atoms in each environment

The type of chemical environment that each proton sits in

The number of hydrogen atoms on the neighbouring carbon atom

The chemical shift value of each separate peak in the spectrum

A singlet

A quartet

A doublet

A triplet

Two alkenes

A diamine and a dicarboxylic acid

A diol and a dicarboxylic acid

Two amino acids

They have a completely inert and unreactive carbon-carbon backbone

They are made entirely from small unsaturated alkene monomers

They do not contain any carbon atoms within the polymer chain at all

They contain ester or amide links that can be hydrolysed