Theory

CH11 - GROUP 17

Oxygen is a Group 16 element. (a) (i) Write equations for the following reactions. • sodium and oxygen • sulfur and oxygen $\text{.............

2024 Winter

3

Theory

CH11 - GROUP 17

Chlorine is one of the elements in Group 17 of the Periodic Table.(a) (i) Describe the colours of the Group 17 elements, chlorine to iodine, at room t...

2024 Winter

3

Theory

CH11 - GROUP 17

Chlorine, $Cl_{2}$, reacts with many elements and compounds to form chlorides.Table 2.1 shows information about some chlorides of Period 3 elements.Ta...

2024 Spring

5

Theory

CH11 - GROUP 17

(a) The elements of Group 17 are called halogens. Complete Table 1.1. [Table_1: halogen - colour at 293K; chlorine - ......; bromine - ......; iodine ...

2024 Summer

2

Theory

CH11 - GROUP 17

Chlorine is one of the elements in Group 17 of the Periodic Table.(a) (i) Describe the colours of the Group 17 elements, chlorine to iodine, at room t...

2024 Winter

2

Theory

CH11 - GROUP 17

(a) Complete Table 2.1.• Identify the bonding shown by each chloride under standard conditions.Use C = covalent, I = ionic, M = metallic.• Identif...

2022 Winter

2

Theory

CH11 - GROUP 17

Radium, Ra, is an element found in Group 2 of the Periodic Table. It is a crystalline solid at room temperature and conducts electricity.Radium chlori...

2022 Summer

2

Theory

CH11 - GROUP 17

The hydrogen halides HCl, HBr and HI are all colourless gases at room temperature.(a) The hydrogen halides can be formed by reacting the halogens with...

2022 Spring

3

Theory

CH11 - GROUP 17

Some of the common chlorides of Period 3 elements are shown in the list.NaCl    MgCl_2    AlCl_3    SiCl_4    ...

2022 Winter

2

Theory

CH11 - GROUP 17

Some of the common chlorides of Period 3 elements are shown in the list.NaCl, MgCl_2, AlCl_3, SiCl_4, PCl_5(a) From this list, identify:(i) all the ch...

2022 Winter

2

MCQ

CH8 - REACTION KINETICS

The Boltzmann distribution for a gas at constant temperature is shown below. If the temperature of the gas is reduced by 10°C the graph changes shape...

2014 Summer

2

MCQ

CH2 - ATOMIC STRUCTURE

Which compound has the greatest total number of lone pairs of electrons in the valence shells of all of its atoms?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

A reaction pathway diagram is shown. Which enthalpy change could the diagram not apply to?

2014 Summer

3

MCQ

CH2 - ATOMIC STRUCTURE

Use of the Data Booklet is relevant to this question.The most common ion-molecule reaction in gas clouds of the Universe is as shown.$$\text{H}_2(g) +...

2014 Summer

2

MCQ

CH6 - ELECTROCHEMISTRY

The electrolysis of brine using the diaphragm cell is an important industrial process. What happens at the anode?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

Hydrazine, $\text{N}_2\text{H}_4$, is used as a rocket fuel because it reacts with oxygen as shown, producing 'environmentally friendly' gases.$\text{...

2014 Summer

2

MCQ

CH4 - STATES OF MATTER

A 10.0 cm^3 bubble of an ideal gas is formed on the sea bed where it is at a pressure of 2020 kPa. Just below the sea surface the pressure is 101 kPa ...

2014 Summer

2

MCQ

CH3 - CHEMICAL BONDING

Four substances have the physical properties shown in [Table_1].Which substance is an ionic solid?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

The enthalpy change of formation of $\text{Mn(NO}_3)_2(\text{s})$ is $-696\text{ kJ mol}^{-1}$.The enthalpy change of formation of $\text{MnO}_2(\text...

2014 Summer

2

MCQ

CH3 - CHEMICAL BONDING

X is an element in Period 2. In which fluoride is the F−X−F angle the largest?

2014 Summer

2