Cambridge IGCSE Chemistry - 0620 - Core Paper 1 2014 Winter Zone 3

A few drops of perfume were spilt on the floor. A few minutes later the perfume could be smelt a few metres away. Which two processes had taken place?

The diagram shows three pieces of apparatus that are used for measuring the volume of a liquid. What are these pieces of apparatus?

A student is investigating a coloured mixture using chromatography.
Where should he place the coloured mixture?

Which statement about a neutron is not correct?

Which element has the atomic structure shown?

Slate has a layered structure and can easily be split into thin sheets. Which diagram shows a structure most like that of slate?

Element X, $_{9}^{19}X$, forms a compound with element Y, $_{19}^{39}Y$.
Which statement describes the bonding in the compound formed?

Which substance is methane?
[Table_1]

The table shows the numbers of atoms present in the formula of some compounds. Which row is not correct?
[Table_1]

An element, X, can be represented as $^{a}_{b}X$.
Which statement is correct?

A student wishes to electroplate an object with copper.
Which row is correct?
[Table_1]

In the electrolysis shown, chlorine is produced at W and sodium at X.

Which labels are correct?

What occurs when a fuel burns?
[Table_1]

Which fuel does not produce air pollution when it burns?

Which graph shows the effect of increasing temperature on the rate of reaction of calcium carbonate with dilute hydrochloric acid?

The diagram shows the change from an anhydrous salt to its hydrated form.

Which statement is correct?

The equations for two reactions P and Q are given.
P $2\text{NaNO}_2 + \text{O}_2 \rightarrow 2\text{NaNO}_3$
Q $2\text{HgO} \rightarrow 2\text{Hg} + \text{O}_2$
In which of these reactions does oxidation of the underlined substance occur? [Table_1]

Which changes decrease the rate of reaction between magnesium and air?
1 heating the magnesium to a higher temperature
2 using a higher proportion of oxygen in the air
3 using magnesium ribbon instead of powdered magnesium

A colourless solution is tested by the following reactions. Which reaction is not characteristic of an acid?

Which statement about oxides is correct?

Which salt preparation uses a burette and a pipette?

The graph shows how the pH of soil in a field changes over time. At which point was the soil neutral?

Which statement about the elements of Group I is correct?

An element X has the two properties listed.
1. It acts as a catalyst.
2. It forms colourless ions.
Which of these properties suggest that X is a transition element?
[Table_1]

An inert gas X is used to fill weather balloons. Which descriptions of X are correct? [Table_1]

The metal beryllium does not react with cold water.
It reacts with hydrochloric acid but cannot be extracted from its ore by using carbon.
Where should it be placed in the reactivity series?

Which information about an element can be used to predict its chemical properties?

A list of properties of aluminium is shown.

1. It conducts heat.
2. It has a low density.
3. It is resistant to corrosion.

Which properties make aluminium useful for making food storage containers?

Which metal is commonly used to form alloys with a non-metallic element?

Which object is least likely to contain aluminium?

Which process does not involve oxidation?

Which pair of compounds would make a N, P, K fertiliser?

Which method of purification would produce water \textbf{most suitable} for drinking?

Which statement about methane is not correct?

A man blows up a balloon.
What is the approximate composition of his exhaled air in the balloon?
[Table_1]

Increasing the number of atoms in one molecule of a hydrocarbon increases the amount of energy released when it burns. What is the correct order? [Table_1]

The list gives the names of four organic compounds.
ethane
ethanoic acid
ethanol
ethene

Which bond do all four compounds contain?

The diagram shows a reaction sequence.

Which row names the processes X, Y and Z?

The main constituent of natural gas is hydrocarbon X.
To which homologous series does X belong and how many atoms are in one molecule of X?
[Table_1]

The equation shows an industrial process.

What is the name of compound X?