Theory

CH12 - THE PERIODIC TABLE

Which statement describes the trends going down group VII of the Periodic Table?A. The boiling point and melting point both decrease.B. The boiling po...

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

An inert atmosphere is needed in a lamp to lengthen the useful life of the metal filament.Why is argon, rather than helium, used for this purpose?[Tab...

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

The sulfate of element F is green.Which other properties is element F likely to have?[Table_1]

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

Which statement describes the trends going down group VII of the Periodic Table? A The boiling point and melting point both decrease. B The boiling ...

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

The sulfate of element F is green.Which other properties is element F likely to have?[Table_1]densitymelting pointAhighhighBhighlowClowhighDlowlow

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

The following is a list of the electron distributions of atoms of unknown elements.[Table_1]element | electron distributionA | 2,5B | 2,8,4C | 2,8,8,2...

2009 Summer

Theory

CH12 - THE PERIODIC TABLE

The diagram shows the position of an element X in the Periodic Table.What is the correct classification of element X and its oxide?Xoxide of XAmetalac...

2009 Winter

Theory

CH12 - THE PERIODIC TABLE

Astatine is an element in Group VII of the Periodic Table. It has only ever been produced in very small amounts. What is the best description of its l...

2009 Winter

Theory

CH12 - THE PERIODIC TABLE

Elements in Group 0 of the Periodic Table have uses.These noble gases are ......1...... and this explains why argon ......2...... be used in lamps.Whi...

2009 Winter

Theory

CH12 - THE PERIODIC TABLE

The table gives information about four elements.[Table_1]Which element is a transition metal?

2009 Winter

MCQ

CH1 - STATES OF MATTER

Small crystals of purple $\text{KMnO}_4$ $(M_r = 158)$ and orange $\text{K}_2\text{Cr}_2\text{O}_7$ $(M_r = 294)$ were placed at the centres of separa...

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Pure water has a boiling point of 100 °C and a freezing point of 0 °C. What is the boiling point and freezing point of a sample of aqueous sodium c...

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

A chromatogram obtained from the chromatography of four substances is shown. Which substance has an $R_f$ value of 0.6?

2017 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Sodium reacts with chlorine to form sodium chloride.Which statements describe what happens to the sodium atoms in this reaction?1. Sodium atoms form p...

2017 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Diamond is extremely hard and does not conduct electricity.Which statement explains these properties?

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Which statement about metals is not correct?

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Aluminium reacts with fluorine.$xAl(s) + yF_2(g) \rightarrow zAlF_3(s)$Which values of $x$, $y$ and $z$ balance the equation?[Table_1]

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Carbon monoxide burns in oxygen to produce carbon dioxide. $$2\text{CO}(g) + \text{O}_2(g) \rightarrow 2\text{CO}_2(g)$$ Which mass of carbon dioxide...

2017 Summer

MCQ

CH1 - STATES OF MATTER

Which statement about electrolysis is correct?

2017 Summer

MCQ

CH1 - STATES OF MATTER

The reactivity series for a number of different metals is shown.[Image_1: Reactivity series and diagram]The diagram shows different metal strips dippe...

2017 Summer