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

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

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

Theory

CH12 - THE PERIODIC TABLE

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

2020 Spring

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

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

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

MCQ

CH1 - STATES OF MATTER

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

2020 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

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

2020 Summer

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

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