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

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Solutions containing chlorate(I) ions are used as household bleaches and disinfectants. These solutions decompose on heating as shown.$$3 ext{ClO}^- ...

2013 Summer

2

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A mixture of 10 cm³ of methane and 10 cm³ of ethane was sparked with an excess of oxygen. After cooling to room temperature, the residual gas was pa...

2013 Summer

1

MCQ

CH6 - ELECTROCHEMISTRY

The diagram shows an electrolytic cell for the extraction of aluminium. Which statement is correct?

2013 Summer

1

MCQ

CH2 - ATOMIC STRUCTURE

Use of the Data Booklet is relevant to this question.The elements radon (Rn), francium (Fr) and radium (Ra) have proton numbers 86, 87 and 88 respecti...

2013 Summer

3

MCQ

CH2 - ATOMIC STRUCTURE

In which species are the numbers of protons, neutrons and electrons all different?

2013 Summer

2

MCQ

CH7 - EQUILIBRIA

An experiment is set up to measure the rate of hydrolysis of ethyl ethanoate. $$ \text{CH}_3\text{CO}_2\text{C}_2\text{H}_5 + \text{H}_2\text{O} \righ...

2013 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

The reaction pathway for a reversible reaction is shown below. Which statement is correct?

2013 Summer

2

MCQ

CH8 - REACTION KINETICS

Why does the rate of a gaseous reaction increase when the pressure is increased at a constant temperature?

2013 Summer

2

MCQ

CH4 - STATES OF MATTER

Which would behave the least like an ideal gas at room temperature?

2013 Summer

1

MCQ

CH4 - STATES OF MATTER

The general gas equation can be used to calculate the $M_r$ value of a gas. For a sample of a gas of mass $mg$, which expression will give the value o...

2013 Summer

3