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 diagrams show the arrangement of particles in three different physical states of substance X.Which statement about the physical states of substanc...

2011 Summer

Theory

CH2 - SEPARATING SUBSTANCES

An aqueous solution is coloured. Which method of separation would show that the solution contains ions of different colours? A chromatography B crysta...

2011 Summer

Theory

CH2 - SEPARATING SUBSTANCES

The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and fi...

2011 Summer

Theory

CH4 - ATOMS COMBINING

Which two elements react together to form an ionic compound? [Table_1] A. W and X B. X and Y C. Y and Z D. Z and W

2011 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows part of the Periodic Table.Which element is correctly matched with its electronic structure?[Table_1: electronic structure]A: 2,8,1B...

2011 Summer

Theory

CH4 - ATOMS COMBINING

In the diagrams, circles of different sizes represent atoms of different elements.Which diagram represents hydrogen chloride gas?Options: A, B, C, D

2011 Summer

Theory

CH4 - ATOMS COMBINING

The nucleon number and proton number of the lithium atom are shown by the symbol $^7_3\text{Li}$.What is the correct symbol for the lithium ion in lit...

2011 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative molecular mass ($M_r$) of HNO$_3$? A 5 B 31 C 32 D 63

2011 Summer

Theory

CH14 - MAKING USE OF METALS

Electricity from a power station passes through overhead cables to a substation and then to a school where it is used to electrolyse concentrated hydr...

2011 Summer

Theory

CH1 - STATES OF MATTER

Which statement about the electrolysis of molten lead(II) bromide is correct? A A colourless gas is seen at the cathode. B A grey metal is seen at...

2011 Summer