GCSE Chemistry - Extracting Metals and Equilibria - 1 - Exam Style Questions with Answers

Created on January 31, 2023 By

paruppts12

GCSE_EDE_CHE_4_EXTRACT_1

1 / 12

iron oxide is neutralised

iron is oxidised

carbon is reduced

iron oxide is reduced

2 / 12

Hydrogen is given off when magnesium reacts with acid.
The hydrogen is tested by collecting the gas in a test tube and igniting it.
What is the safest way to ignite the gas?

put a lighted splint at the open end of the test tube

add fuel to the test tube

put the test tube in an oven

heat the test tube with a Bunsen burner

3 / 12

Some nickel ores contain nickel sulfide.
In the final stage of the extraction process, a nickel compound is electrolysed to produce pure nickel.
An advantage of producing a metal by electrolysis is that _____

electrolysis is the only method of extracting unreactive metals

electrolysis is a very cheap method of extraction

the metal produced by electrolysis is very pure

electrolysis uses a large amount of electricity

4 / 12

Some metals, such as aluminium, are extracted from their ores using electrolysis.
Why are some metals extracted using electrolysis?

They are more reactive than carbon

They are native metals

They conduct electricity

They have low melting points

5 / 12

Most metals are extracted from ores found in the Earth's crust.
The method used to extract a metal from its ore is linked to the reactivity of the metal.
Part of the reactivity series is shown in Figure 14.
Predict the method that will have to be used to extract calcium from its ore.

Distillation

Electrolysis

Chromatography

Filtration

6 / 12

The reactivity of copper, magnesium and zinc was investigated.

Each metal was placed separately in dilute hydrochloric acid.

The amount of effervescence was observed.

The same mass of metal was used in each experiment.

Which piece of apparatus should be used to find the mass of metal used?

a stopwatch

a thermometer

a pipette

a balance

7 / 12

A student carried out an experiment to see how reactive different metals are when they are placed in dilute hydrochloric acid.
A sample of each metal was placed in a separate test tube of acid.
When zinc reacts with dilute hydrochloric acid, a gas is given off and zinc chloride is formed.
Which gas is given off?

hydrogen

chlorine

carbon dioxide

oxygen

8 / 12

In this reaction zinc oxide loses oxygen.
State the type of reaction taking place when an oxide loses oxygen.

Oxidation

Redox

Neutralization

Reduction

9 / 12

Some metals are unreactive and exist on their own in the earth.
What are these metals known as?

Alkali earth metals

Transition metals

Alkali metals

Native metals

10 / 12

Which of the following metals can not be extracted from its ore by reduction?

Iron

Copper

Lithium

Zinc

11 / 12

When chromium reacts with oxygen, chromium oxide is formed
What type of reaction occurs when chromium reacts with oxygen?

oxidation

neutralisation

evaporation

condensation

12 / 12

Some metals are found in the Earth's crust as uncombined elements.
Reactive metals are found in ores.
In ores, metals are combined with other elements.
Which of these metals is found as the uncombined element in the Earth's crust?

gold

zinc

potassium

aluminium

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