Cambridge IGCSE Chemistry - 0620 - Core Paper 1 2013 Summer Zone 2

The diagram shows a cup of tea.
Which row describes the water particles in the air above the cup compared with the water particles in the cup?
[Table_1]

The diagram shows an experiment to find the formula of magnesium oxide.

Which piece of apparatus would be needed in addition to those shown?

Methanol, CH$_3$OH, and ethanol, C$_2$H$_5$OH, are miscible liquids.
Which diagram shows apparatus that is used to obtain methanol from a mixture of ethanol and methanol?

The positions of four elements are shown on the outline of the Periodic Table.
Which element forms a coloured oxide?

The diagram shows an atom of an element.
How many protons and neutrons are in the nucleus of the atom and in which group and period of the Periodic Table is the element found? [Table_1]

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

The equation shows the reaction between magnesium and sulfuric acid.

$\text{Mg} + \text{H}_2\text{SO}_4 \rightarrow \text{MgSO}_4 + \text{H}_2$

$(\text{Mg} = 24, \text{H} = 1, \text{S} = 32, \text{O} = 16)$

In this reaction, what mass of magnesium sulfate will be formed when 6 g of magnesium reacts with excess sulfuric acid?

Element X has six electrons in its outer shell.
[Image_1: Diagram showing electrons]
How could the element react?

The diagram shows an incomplete circuit.

Which substance causes the lamp to light when added to the glass tube?

What is the balanced chemical equation for the reaction between calcium and water?

The diagram shows an electrical cable.
Which statement about the substances used is correct?

Statement 1 Hydrogen is used as a fuel.
Statement 2 When hydrogen burns in the air to form water, heat energy is produced.
Which is correct?

Which substance does not require oxygen in order to produce energy?

In which equation is the underlined substance acting as a reducing agent?

The diagram shows an experiment to compare the rate of reaction when a metal is added to hydrochloric acid.
In which test-tube is the reaction fastest?

Two oxides, X and Y, are added separately to dilute sulfuric acid and dilute sodium hydroxide.
X reacts with dilute sulfuric acid but Y does not react.
Y reacts with aqueous sodium hydroxide but X does not react.
Which type of oxide are X and Y?
[Table containing options for acidic oxide, basic oxide, and metallic oxide]

Heating pink cobalt(II) chloride crystals forms a blue solid and steam. The blue solid turns pink when water is added. Which terms describe the pink cobalt(II) chloride and the reaction? [Table_1]

Concentrated aqueous sodium chloride, concentrated hydrochloric acid and molten lead bromide were separately electrolysed in experiments 1, 2 and 3.

Which statement about the electrode products is correct?

Which statement about the reaction of acids is correct?

The diagram shows an experiment.

What happens to the pieces of litmus paper?

Two indicators, bromophenol blue and Congo red, show the following colours in acidic solutions and in alkaline solutions.

[Table of indicators and their colors]

A few drops of each indicator are added to separate samples of a solution of pH 2.

What are the colours of the indicators in this solution?

[Table showing options of bromophenol blue and Congo red in pH 2]

W, X, Y and Z are elements in the same period in the Periodic Table.
W and Y are metals. X and Z are non-metals.
Which shows the correct order of these elements across the period?

Platinum is a transition metal. Which statement about platinum is correct?

Which element will be less reactive than the other members of its group in the Periodic Table?

Bromine is in Group VII on the Periodic Table. Which describes the appearance of bromine at room temperature?

A substance, X, has the following properties.
1 It has a high melting point.
2 It conducts electricity in the solid and liquid states.
3 It is malleable.
4 It has a high density.
What is X?

Why is aluminium used to make food containers?

Which statement is incorrect?

The diagram represents the structure of substance S.
What is S?

Q, R, S and T are four metals.
Q is found naturally as the metal.
R reacts with steam but not with cold water.
S reacts violently with cold water.
The oxide of T is reduced to T by heating with carbon.
What is the order of reactivity of the four metals, starting with the most reactive first?

The diagram shows a stage in the purification of dirty water.
Which process does this apparatus show?

The diagrams show two processes.

For which processes is oxygen involved?

Which substance would make the best general fertiliser?
[Table_1]

Which information about carbon dioxide and methane is correct? [Table_1]

Which process does not produce carbon dioxide?

Organic compounds may have names ending in -ane, -ene, -ol or -oic acid.
How many of these endings indicate the compounds contain double bonds in their molecules?

In the flow chart, which fuel could be gasoline?

The structures of four molecules are shown.

Which two molecules belong to the same homologous series?

Which columns describe the hydrocarbons ethane and ethene?
[Table_1]

Which process is not used during the production of ethanol?