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IGCSE Chemistry Extended4.1.7—Metals are electroplatedTopic Practice

4.1.7—Metals are electroplated

• Describe how metals are electroplated

Question 10

[Maximum number: 1]

Which apparatus could be used to electroplate an iron nail with copper?

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Question 10

[Maximum number: 1]

Which apparatus is used to plate a nickel object with silver?

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Question 10

[Maximum number: 1]

Iron can be electroplated with zinc to make it resistant to corrosion.
Which row about electroplating iron with zinc is correct?

positive electrode
(anode)

negative electrode
(cathode)

electrolyte

iron

zinc

iron nitrate

iron

zinc

zinc nitrate

zinc

iron

iron nitrate

zinc

iron

zinc nitrate

Question 10

[Maximum number: 1]

Which apparatus could be used to electroplate an iron nail with copper?

Question image

Question 14

An object is electroplated with silver using an aqueous silver salt as the electrolyte.
Which row is correct?

Table

Question 4(b)(i)

[Maximum number: 4]

Solutions of ionic compounds can be broken down by electrolysis.

Metal objects can be electroplated with silver.

Describe how a metal spoon can be electroplated with silver. Include:
- what to use as the positive electrode and as the negative electrode
- what to use as the electrolyte
- an ionic half-equation to show the formation of silver.

You may include a diagram in your answer.
ionic half-equation

Question 4(b)

[Maximum number: 2]

Electroplating steel objects with silver involves a three-step process.
step 1 A coating of copper is applied to the object.
step 2 A coating of nickel is applied to the object.
step 3 The coating of silver is applied to the object.

Give two changes which would be needed in order to coat nickel onto the object in step 2.

Question 5(c)(i)

[Maximum number: 3]

This question is about electricity and chemical reactions.

Spoons can be electroplated with silver.

Name the substances used as:
the anode (positive electrode)
the cathode (negative electrode)
the electrolyte.

Question 5(b)

[Maximum number: 3]

This question is about copper and its compounds.

A metal spoon is electroplated with copper.

State what is used as:
the positive electrode (anode)
the negative electrode (cathode)
the electrolyte.

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