MCQ

CH4 - ATOMS COMBINING

In which compounds are pairs of electrons shared between atoms?1 sodium chloride2 methane3 lead bromide

2010 Summer

1

MCQ

CH4 - ATOMS COMBINING

Element X has six electrons in its outer shell.How could the element react?

2010 Summer

2

MCQ

CH4 - ATOMS COMBINING

In the diagrams, circles of different sizes represent atoms of different elements. Which diagram represents hydrogen chloride gas?

2011 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which row shows the change that takes place when element X gains the new particle shown? [Table_1]

2010 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which two elements react together to form an ionic compound?[Table_1]Table 1: Electronic structures of the elements W, X, Y, and Z.

2011 Summer

2

MCQ

CH4 - ATOMS COMBINING

The diagrams show the structures of two forms, P and Q, of a solid element. What are suitable uses of P and Q, based on their structures?

2009 Summer

2

MCQ

CH4 - ATOMS COMBINING

The 'lead' in a pencil is made of a mixture of graphite and clay. When the percentage of graphite is increased, the pencil slides across the paper mor...

2014 Summer

2

MCQ

CH4 - ATOMS COMBINING

Electrons from each element are shared by both of the elements in a compound. Which compound matches this description?

2013 Summer

2

MCQ

CH4 - ATOMS COMBINING

Element V forms an acidic, covalent oxide. Which row in the table shows how many electrons there could be in the outer shell of an atom of V? [Table_1...

2009 Summer

2

MCQ

CH4 - ATOMS COMBINING

The electronic structures of two atoms, X and Y, are shown. X and Y combine together to form a compound. What is the type of bonding in the compou...

2014 Summer

2

MCQ

CH1 - STATES OF MATTER

Which diagram shows the process of diffusion?

2012 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?

2012 Summer

2

MCQ

CH10 - THE SPEED OF A REACTION

A student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30°C. The student has a beake...

2012 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An element Y has the proton number 18.The next element in the Periodic Table is an element Z.Which statement is correct?

2012 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Which atom has twice as many neutrons as protons?

2012 Summer

1

MCQ

CH4 - ATOMS COMBINING

Which is a simple covalent molecule? [Table_1]

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The electronic structures of atoms P and Q are shown.P and Q react to form an ionic compound. What is the formula of this compound?

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The diagrams show the structures of two forms, P and Q, of a solid element. What are suitable uses of P and Q, based on their structures?

2012 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between magnesium and dilute sulfuric acid is shown.$$\text{Mg} + \text{H}_2\text{SO}_4 \rightarrow \text{MgSO}_4 + \tex...

2012 Summer

2

MCQ

CH1 - STATES OF MATTER

Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold.The teeth were coated with a thin layer of carbon and were th...

2012 Summer

2