MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

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

2009 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which diagram shows a process in which an endothermic change is taking place?

2009 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The equation shows a reaction that is reversed by changing the conditions. forward reaction$\text{CuSO}_4·5\text{H}_2\text{O} \rightarrow \text{CuSO...

2009 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which diagram shows a process in which an endothermic change is taking place?

2009 Summer

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?

2009 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The equation shows a reaction that is reversed by changing the conditions.forward reaction$\text{CuSO}_4\cdot5\text{H}_2\text{O} \rightarrow \text{CuS...

2009 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Substance X requires oxygen in order to produce energy.It does not form carbon dioxide as a result of this energy production.What is substance X?

2009 Winter

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

When an acid is added to an alkali the temperature rises. Which words describe this reaction?

2009 Winter

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

When blue copper(II) sulfate is heated, a white solid and water are formed. The white solid turns blue and gives out heat when water is added to it.Wh...

2009 Winter

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

When an acid is added to an alkali the temperature rises.Which words describe this reaction?

2009 Winter

Theory

CH3 - ATOMS AND ELEMENTS

(a) The electronic structures of five atoms, A, B, C, D and E, are shown.Answer the following questions about these electronic structures.Each electro...

2022 Spring

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

(a) Biogas is a mixture of gases produced when agricultural waste is broken down in the absence of oxygen.The table compares the percentage by mass of...

2022 Spring

Theory

CH13 - THE BEHAVIOR OF METALS

This question is about metals.(a) State \textbf{three} general physical properties common to most metals.1 ..............................................

2022 Spring

Theory

CH11 - ACIDS AND BASES

This question is about acids, bases and salts.(a) Sodium hydroxide is a base.(i) Name the products formed when sodium hydroxide reacts with dilute nit...

2022 Spring

Theory

CH15 - AIR AND WATER

This question is about air.(a) The pie chart shows the proportions of the main gases in clean, dry air.(i) Name the gases G and H.gas G .................

2022 Spring

Theory

CH12 - THE PERIODIC TABLE

The table shows some properties of four Group I elements.[Table_1] element | melting point / $^{\circ}C$ | boiling point / $^{\circ}C$ | relative hard...

2022 Spring

Theory

CH17 - ORGANIC CHEMISTRY

(a) The structures of four organic compounds, P, Q, R and S, are shown.Answer the following questions about these structures.Each structure may be use...

2022 Spring

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

This question is about chlorine and compounds of chlorine.(a) Chlorine is an element in Group VII of the Periodic Table.State the meaning of the term ...

2022 Spring

MCQ

CH1 - STATES OF MATTER

Diagrams of the three states of matter for carbon dioxide are shown. Which two diagrams show the states of matter before and after the sublimation of...

2022 Summer

MCQ

CH1 - STATES OF MATTER

A student measures the time taken for 2.0 g of magnesium to dissolve in 50 cm$^3$ of dilute sulfuric acid. Which apparatus is essential to complete t...

2022 Summer