MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The diagram shows some properties that substances may have.To which labelled part of the diagram does $^{235}U$ belong?

2016 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which statement about fuels is correct?

2017 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which statements about exothermic and endothermic reactions are correct?1. During an exothermic reaction, heat is given out.2. The temperature of an e...

2017 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The energy level diagram for the combustion of methane is shown. Which row gives the equation and energy change for this reaction?

2016 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The equation for the reaction between hydrogen and chlorine is shown.$$H_2(g) + Cl_2(g) \rightarrow 2HCl(g)$$The reaction is exothermic.The bond energ...

2017 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

A gas is produced when calcium carbonate is heated. Which type of change is this?

2017 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The reaction used to manufacture ammonia from nitrogen and hydrogen is reversible. An equilibrium can be established between ammonia, nitrogen and hyd...

2017 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Methanol is made by reacting carbon monoxide with hydrogen. The reaction is exothermic and is a chemical equilibrium. The equation for the reaction is...

2016 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The equation for the combustion of methane is shown.$$\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}$$The energy change for t...

2017 Winter

3

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which statement describes an exothermic reaction?

2017 Winter

1

Theory

CH2 - SEPARATING SUBSTANCES

Petroleum is a useful natural resource.The diagram shows how petroleum can be separated into useful substances.(a) What is the name of the separation ...

2020 Spring

2

Theory

CH11 - ACIDS AND BASES

Aluminium is extracted from its ore. The ore is converted into pure aluminium oxide, which then undergoes electrolysis as shown.(a) (i) Name an ore of...

2020 Spring

1

Theory

CH12 - THE PERIODIC TABLE

(a) Identify the element which is in Group VI and Period 4...............................................................................................

2020 Spring

2

Theory

CH13 - THE BEHAVIOR OF METALS

Iron is a typical transition element.Iron:● acts as a catalyst● forms coloured compounds● has more than one oxidation state.(a) Name one major i...

2020 Spring

2

Theory

CH18 - POLYMERS

There are two types of polymers.(a) Addition polymers are made from many identical small units. (i) What is the term used to describe these small unit...

2020 Spring

2

MCQ

CH1 - STATES OF MATTER

A mixture of ice and water is left to stand and the ice melts.Which row describes what happens as the ice is melting?[Table_1]temperature of mixture |...

2020 Summer

2

MCQ

CH1 - STATES OF MATTER

Which piece of apparatus should be used to measure exactly 21.4 cm$^3$ of water?

2020 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

The chromatogram for an unknown dye is shown.What is the $R_f$ value of the dye?

2020 Summer

3

MCQ

CH3 - ATOMS AND ELEMENTS

The atomic number and nucleon number of a potassium atom are shown.[Table_1]How many protons, neutrons and electrons are in a potassium ion, K⁺?

2020 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

The electronic structures of two atoms, P and Q, are shown. P and Q combine together to form a compound.What is the type of bonding in the compound an...

2020 Summer

1