Chemistry Quiz

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Test Your Chemistry Knowledge

Welcome to the Chemistry Quiz! This quiz is designed to challenge your understanding of various chemistry concepts and laboratory techniques. Test your knowledge and see how well you can apply theoretical concepts to practical scenarios.

10 multiple-choice questions
Focus on laboratory techniques
Suitable for students and chemistry enthusiasts

10 Questions2 MinutesCreated by MixingMolecule42

A student carries out an experiment to prepare pure magnesium sulfate crystals.He adds magnesium carbonate until no more reacts. Which process should he use for the next stage?

Crystallisation

Evaporation

Filtration

Neutralisation

A student separates salt from a mixture of salt and sand. What is the correct order of steps for the student to take?

Filter → evaporate → shake with water

Filter → shake with water → evaporate

Shake with water → evaporate → filter

Shake with water → filter → evaporate

A mixture of ethanol and methanol are separated by fractional distillation. This method of separation depends on a difference in property X of these two alcohols. What is property X?

Boiling point

Colour

Melting point

Solubility

A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents. One of these colouring agents is suspected of being illegal. Which method could be used to show the presence of this illegal colouring agent?

Chromatography

Distillation

Evaporation

Filtration

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

Crystallisation

Distillation

Evaporation

Filtration

Ethanol is made by fermentation. How is ethanol obtained from the fermentation mixture?

Chromatography

Crystallisation

Electrolysis

Fractional distillation

Which two methods can be used to separate a salt from its solution in water? 1. crystallisation 2. decanting 3.distillation 4.filtration

1 and 2

1 and 3

2 and 3

3 and 4

The results of some tests on a colourless liquid X are shown. • Boiling point = 102°C • Universal Indicator turns green What is X?

Ethanol

Hydrochloric acid

Pure water

Sodium chloride (salt) solution

Which method separates a mixture of sugar and glass?

Dissolve, filter and evaporate

Distil and filter

Fractionally distil

Use chromatography

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