GCSE Chemistry – States of Matter and Mixtures – 1 -Exam Style Questions with Answers

Which of the following lists of compounds from the table contains only ionic
compounds?

Methane is a typical simple molecular, covalent compound.
A property of methane is that_______

Copper is a metal. Copper forms coloured compounds.
Give the name of the type of metals that form coloured compounds.

Liquid oils can be converted into solid fats by hydrogenation.
In this reaction__

A mixture of two immiscible liquids can be separated by using ____

Graphite is a form of the element carbon.
Graphite is a giant molecular, covalent substance.

Give a use of graphite that depends on its ability to conduct electricity.

Barium chloride solution is used to test for the presence of sulfate ions in a solution.

When sulfate ions are present, insoluble barium sulfate is formed.

Describe the appearance of barium sulfate.

Vegetable oils and fats are esters.

One of these oils is boiled with concentrated sodium hydroxide solution. The mixture is poured into concentrated sodium chloride solution. A white solid is formed.

What type of substance is the white solid ?

Which of the following pairs of substances contains one substance that is soluble in water and one that is insoluble in water?

Which mixture contains an insoluble food colouring?

Copper is a metal.
Copper conducts electricity because particles in it move through the structure.
These particles are _______

Compound X is a metal carbonate. A flame test was carried out on compound X.

A lilac flame was seen.