Theory

CH4 - STATES OF MATTER

The elements carbon and silicon are both in Group IV of the Periodic Table. Carbon is the second most abundant element by mass in the human body and s...

2009 Winter

Theory

CH4 - STATES OF MATTER

1. Conventional batteries produce electrons through a chemical reaction between electrolyte and metal.2. Chemical reaction in the ‘paper’ battery ...

2009 Winter

MCQ

CH4 - STATES OF MATTER

Which gas closely approaches ideal behaviour at room temperature and pressure?

2010 Summer

MCQ

CH4 - STATES OF MATTER

Which mass of gas would occupy a volume of 3 dm$^3$ at 25°C and 1 atmosphere pressure? [1 mol of gas occupies 24 dm$^3$ at 25°C and 1 atmosphere pre...

2010 Summer

MCQ

CH4 - STATES OF MATTER

Which diagrams represent part of a giant molecular structure? 1. [Image with C] 2. [Image with C] 3. [Image with Na and Cl]

2010 Summer

MCQ

CH4 - STATES OF MATTER

Which diagrams represent part of a giant molecular structure?

2010 Summer

Theory

CH4 - STATES OF MATTER

Copper, proton number 29, and argon, proton number 18, are elements which have different physical and chemical properties. In the solid state, each el...

2010 Summer

Theory

CH4 - STATES OF MATTER

An organic compound, E, has the following composition by mass: C, 48.7%; H, 8.1%; O, 43.2%. (a) Calculate the empirical formula of E. (b) When vapo...

2010 Summer

Theory

CH4 - STATES OF MATTER

A possible source of energy for the road vehicles of the future is hydrogen. One of the problems still to be solved is the storage of the hydrogen in ...

2010 Winter

Theory

CH4 - STATES OF MATTER

A possible source of energy for the road vehicles of the future is hydrogen. One of the problems still to be solved is the storage of the hydrogen in ...

2010 Winter

Theory

CH10 - GROUP 2

Group 2 metals form alkaline solutions in water.(a) (i) Write the equation for the reaction of calcium oxide with water..................................

2020 Spring

Theory

CH11 - GROUP 17

(a) Describe the trend in the colour of the Group 17 elements down the group. ..........................................................................

2020 Spring

Theory

CH17 - HYDROXY COMPOUNDS

(a) A series of reactions starting from glycerol is shown. (i) Suggest the reagent(s) and conditions for reaction 1. ....................................

2020 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Iron is a transition element in the fourth period. Iron forms compounds containing the ions $\text{Fe}^{2+}$ and $\text{Fe}^{3+}$.(a) (i) Define the t...

2020 Spring

Theory

CH10 - GROUP 2

(a) Group 2 metals form stable carbonates and sulfates.(i) State and explain the trend in the thermal stability of the Group 2 carbonates down the gro...

2020 Spring

Theory

CH6 - ELECTROCHEMISTRY

Gold is an unreactive metal that can only be oxidised under specific conditions.(a) The standard electrode potential, $E^{\circ}$, of $\text{Au}^{3+}(...

2020 Spring

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compound F has been found in small quantities in some cereals and dried fruit.(a) (i) Give the name of the functional groups labelled A and B.A .........

2020 Spring

Theory

CH7 - EQUILIBRIA

Gallic acid, $C_7H_6O_5$, is a naturally occurring aromatic molecule. [Image_1: Structure of gallic acid] (a) Gallic acid contains the carboxylic ...

2020 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Valinol can be synthesised by the following reactions. Reaction 1 uses valine as the starting material. (a) (i) Write an equation for reaction 1, u...

2020 Spring

MCQ

CH7 - EQUILIBRIA

Ethene can be oxidised to form epoxyethane, $C_2H_4O$.$$C_2H_4(g) + \frac{1}{2}O_2(g) \rightleftharpoons C_2H_4O(g) \quad \Delta H^\circ = -107 \text{...

2020 Summer