Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Vanadium, niobium and tantalum are metals in the same group of the Periodic Table.(a) The shorthand electronic configuration of vanadium in the ground...

2024 Winter

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Cobalt, rhodium and iridium are metals in the same group of the Periodic Table. (a) The shorthand electronic configuration of cobalt is [Ar]3d\(^7\)4s...

2024 Winter

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Cobalt, rhodium and iridium are metals in the same group of the Periodic Table.(a) The shorthand electronic configuration of cobalt is [Ar]3d^7 4s^2.(...

2024 Winter

3

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) (i) Describe the trend in the solubility of the hydroxides of magnesium, calcium and strontium.Explain your answer...................................

2024 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) When NaOH(aq) is added to an aqueous solution containing [Co(H2O)6]2+ a precipitation reaction occurs accompanied by a colour change.In this react...

2024 Winter

4

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) (i) Describe the trend in the solubility of the hydroxides of magnesium, calcium and strontium.Explain your answer...................................

2024 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Copper is used in electrical equipment. It has a melting point of 1085°C.(a) (i) Identify the lattice structure of copper...............................

2023 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

The Group 2 elements Mg to Ba are all silvery-white reactive metals.(a) (i) Draw a labelled diagram to show the bonding and structure of the Group 2 m...

2023 Spring

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) The reaction of pure aluminium is only observed if the aluminium oxide layer is removed first. When pure aluminium is added to cold water, bubbles...

2023 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

The melting points of some solids are shown in Table 1.1.[Table_1](a) (i) State the type of bonding present in magnesium and in sodium chloride. bondi...

2023 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Copper and titanium are each used with aluminium to make alloys which are light, strong and resistant to corrosion. Aluminium, $Al$, is in the third p...

2009 Summer

2

Theory

CH10 - GROUP 2

Magnesium will react on heating with chlorine, or oxygen, or nitrogen to give the chloride, or oxide, or nitride respectively. Each of these compounds...

2009 Summer

2

Theory

CH15 - HYDROCARBONS

Concern over the ever-increasing use of fossil fuels has led to many suggestions for alternative sources of energy. One of these, suggested by Profess...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) Complete the following reaction scheme which starts with ethanol.In each empty box, write the structural formula of the organic compound that woul...

2009 Summer

1

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) When F is formed in step I no other compound is produced. Suggest a structural formula for F, which contains one –OH group.(b) Compound G has tw...

2009 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) Complete the electronic configuration of aluminium and of titanium, proton number 22.\[\begin{array}{|c|c|} \hline \text{Al} & 1s^2 \\ \hline \tex...

2009 Summer

2

Theory

CH10 - GROUP 2

(a) (i) Write an equation, with state symbols, for the second ionisation energy of calcium...............................................................

2009 Summer

1

Theory

CH15 - HYDROCARBONS

Concern over the ever-increasing use of fossil fuels has led to many suggestions for alternative sources of energy. One of these, suggested by Profess...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) Complete the following reaction scheme which starts with propanone. In each empty box, write the structural formula of the organic compound that w...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

Ethanol, CH$_3$CHO, can be converted into compound U by the following sequence.(a) When T is formed in step I, no other compound is produced.Suggest a...

2009 Summer

2