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

The diagram shows the result of dropping a purple crystal into water. Which processes take place in this experiment?

2014 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

The four pieces of apparatus shown below are used in chemical experiments. Which statement about the apparatus is correct?

2014 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Alcohol and water are completely miscible. This means when mixed together they form only one liquid layer. Which method is used to separate alcohol fr...

2014 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The diagram shows the structure of an atom of element X. What is X?

2014 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The diagrams show four particles.Which two diagrams show atoms that are isotopes of each other?

2014 Summer

1

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 mo...

2014 Summer

2

MCQ

CH4 - ATOMS COMBINING

Element X is in Group I of the Periodic Table. X reacts with element Y to form an ionic compound.Which equation shows the process that takes place whe...

2014 Summer

1

MCQ

CH4 - ATOMS COMBINING

Solid F is an element. Solid G is a compound. Neither solid conducts electricity but G conducts electricity when dissolved in water. These properties ...

2014 Summer

1

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound contains one atom of calcium, two atoms of hydrogen and two atoms of oxygen. What is the correct chemical formula of the compound?

2014 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

In athletics, banned drugs such as nandrolone have been taken illegally to improve performance. Nandrolone has the molecular formula $C_{18}H_{26}O_2$...

2014 Summer

1