Theory

CH17 - ORGANIC CHEMISTRY

A compound has the formula CH₃CH₂CH=CH₂. Which row in the table shows the type of compound and the colour change when aqueous bromine is added?...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The diagram shows an industrial process. Substance M is one of the substances produced by this process and is used as aircraft fuel. What is this pr...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The structures of three compounds are shown.Why do these substances all belong to the same homologous series?A They all contain an even number of carb...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

Which bond is not in a molecule of ethanoic acid?A) C–OB) C=OC) C=CD) O–H

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

A compound has the formula CH3CH2CH=CH2.Which row in the table shows the type of compound and the colour change when aqueous bromine is added?[Table_1...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The structures of three compounds are shown.Why do these substances all belong to the same homologous series?A They all contain an even number of carb...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

Which bond is not in a molecule of ethanoic acid?A. C–OB. C=OC. C=CD. O–H

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The diagram shows an industrial process. Substance M is one of the substances produced by this process and is used as aircraft fuel. What is this pr...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The apparatus shows an experiment used to test gas X.The bromine solution quickly becomes colourless.What is the structure of gas X?A H−C−HB H |...

2009 Winter

Theory

CH17 - ORGANIC CHEMISTRY

Which statement about petroleum is not correct?A. It can be separated into useful substances by fractional distillation.B. It consists mainly of hydro...

2009 Winter

Theory

CH1 - STATES OF MATTER

The diagram shows a cup of tea. Which row describes the water particles in the air above the cup compared with the water particles in the cup?[Table_1...

2013 Summer

Theory

CH11 - ACIDS AND BASES

Crystals of sodium chloride were prepared by the following method.1 25.0cm3 of dilute hydrochloric acid was accurately measured into a conical flask....

2013 Summer

Theory

CH11 - ACIDS AND BASES

Lead iodide is insoluble in water.Lead iodide is made by adding aqueous lead nitrate to aqueous potassium iodide.Which pieces of apparatus are needed ...

2013 Summer

Theory

CH3 - ATOMS AND ELEMENTS

Element X is represented by $^{27}_{13}X$.Which statement about element X is correct?A. An atom of X contains 13 protons and 13 neutrons.B. An atom of...

2013 Summer

Theory

CH12 - THE PERIODIC TABLE

The positions of four elements are shown on the outline of the Periodic Table.Which element forms a coloured oxide?

2013 Summer

Theory

CH4 - ATOMS COMBINING

For which substance is the type of bonding \textbf{not} correct?[Table_1]The table contains the following:\begin{center}\begin{tabular}{|c|c|c|c|}\hli...

2013 Summer

Theory

CH4 - ATOMS COMBINING

Element X has six electrons in its outer shell. How could the element react? A by gaining two electrons to form a positive ion B by losing six elec...

2013 Summer

Theory

CH1 - STATES OF MATTER

The diagram shows an incomplete circuit. Which substance causes the lamp to light when added to the glass tube? A. aqueous sodium chloride B. aqu...

2013 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound with the formula XF$_2$ has a relative formula mass of 78.What is element X?A) argonB) calciumC) neonD) zirconium

2013 Summer

Theory

CH13 - THE BEHAVIOR OF METALS

What is the balanced chemical equation for the reaction between calcium and water?A. $\text{Ca} + \text{H}_2\text{O} \rightarrow \text{CaOH} + \text{H...

2013 Summer