Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Explain what is meant by the term transition element.................................................................................................

2009 Summer

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

One major difference between the properties of compounds of the transition elements and those of other compounds is that the compounds of the transiti...

2009 Winter

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Apart from its catalytic activity, state two properties of iron or its compounds that show that it is a transition element...............................

2009 Winter

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Put the following items in order of increasing size. Use the number 1 to indicate the smallest and 3 to indicate the largest.length of DNA molecul...

2009 Winter

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Describe three characteristic chemical properties of transition elements that are not shown by Group II elements.....................................

2010 Summer

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Complete the electronic structures of the Cr^{3+} and Mn^{2+} ions.Cr^{3+} \ 1s^2 2s^2 2p^6 \ ...........Mn^{2+} \ 1s^2 2s^2 2p^6 \ ...........(b)...

2010 Summer

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Complete the electronic structures of the $\text{Cr}^{3+}$ and $\text{Mn}^{2+}$ ions.\text{Cr}^{3+} \quad 1s^2 2s^2 2p^6 \text{................}\t...

2010 Summer

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) (i) What is meant by the term ligand in the context of transition element chemistry?.................................................................

2010 Winter

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) (i) What is meant by the term ligand in the context of transition element chemistry? ................................................................

2010 Winter

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Explain why complexes of transition elements are often coloured. ....................................................................................

2010 Winter

MCQ

CH4 - STATES OF MATTER

The temperature of a sample of an inert gas is increased.What effect does this have on the number of molecules with the most probable energy and on th...

2019 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A sample of element X is analysed using mass spectrometry. The mass spectrum obtained is shown.What is the relative atomic mass of this sample of elem...

2019 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A washing powder contains sodium hydrogencarbonate, NaHCO_3, as one of the ingredients.In a titration, a solution containing 1.00 g of this washing po...

2019 Summer

MCQ

CH2 - ATOMIC STRUCTURE

The outermost electron in an atom of neon occupies a particular orbital.Which row shows the relative energy and shape of this orbital?[Table_1: Energy...

2019 Summer

MCQ

CH3 - CHEMICAL BONDING

In which species is there a lone pair of electrons?

2019 Summer

MCQ

CH4 - STATES OF MATTER

When an evacuated tube of volume 400 cm$^3$ is filled with gas at 300 K and 101 kPa, the mass of the tube increases by 0.65 g.Assume the gas behaves a...

2019 Summer

MCQ

CH4 - STATES OF MATTER

Under which conditions will nitrogen behave most like an ideal gas?[Table with conditions]

2019 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

Two reactions and their enthalpy changes are shown.2C(s) + 2H$_2$(g) \rightarrow C$_2$H$_4$(g) \hspace{1em} \Delta H^\circ = +52.2 \text{ kJ mol}^{-1}...

2019 Summer

MCQ

CH6 - ELECTROCHEMISTRY

Ethandioic acid, HO$_2$CCO$_2$H, can be oxidised by KMnO$_4$ in dilute sulfuric acid. The products of this reaction are carbon dioxide, water, potassi...

2019 Summer

MCQ

CH7 - EQUILIBRIA

Hydrogen iodide gas decomposes reversibly producing iodine vapour and hydrogen.$$2HI(g) \rightleftharpoons I_2(g) + H_2(g) \quad \Delta H = +12 \text{...

2019 Summer