Oxidation is defined as:

the loss of electrons from an atom.

the gain of electrons by an atom.

the sharing of electrons between atoms.

the complete transfer of electrons between atoms.

Define the term oxidation.

The process of losing electrons

The process of gaining electrons

The process of forming a covalent bond

The process of breaking a covalent bond

Identify which element has been oxidised and reduced in the below reaction. Magnesium + Oxygen → Magnesium oxide. 2Mg + O₂ → 2MgO. Charges on ions: Mg²⁺, O²⁻. Remember that elements and compounds have no overall charge!!

Magnesium is oxidised and Oxygen is reduced

Oxygen is oxidised and Magnesium is reduced

Both Magnesium and Oxygen are oxidised

Both Magnesium and Oxygen are reduced

Identify which element has been oxidised and reduced in the below reaction. Magnesium + Oxygen → Magnesium oxide 2Mg + O₂ → 2MgO. Charges on ions: Mg²⁺, O²⁻. Remember that elements and compounds have no overall charge!!

Magnesium is oxidised and Oxygen is reduced

Oxygen is oxidised and Magnesium is reduced

Both Magnesium and Oxygen are oxidised

Both Magnesium and Oxygen are reduced

Describe the test for the presence of the gas inside this disastrous balloon.

The balloon contains hydrogen, and a lit splint will cause a 'pop' sound.

The balloon is filled with helium, and a lit splint will pop it.

The balloon is filled with oxygen, and a glowing splint will relight.

The balloon contains carbon dioxide, and limewater will turn milky.

Describe the test for the presence of the gas inside this disastrous balloon.

By using a water displacement test

Oxidation is defined as:

the loss of electrons by a molecule, atom, or ion

the gain of electrons by a molecule, atom, or ion

the process of a substance combining with oxygen

the transfer of protons between substances

The test for the presence of the gas inside this disastrous balloon is described as:

C. The gas extinguishes a burning splint.

A. The balloon bursts with a loud noise.

B. The gas changes the color of litmus paper.

D. The gas supports combustion.

Electrolysis involves which of the following processes?

Oxidation at the anode and reduction at the cathode

Reduction at the anode and oxidation at the cathode

Which method is used to extract metals that are more reactive than carbon?

Electrolysis of molten compounds

What is the purpose of electrolysis?

It is used to extract a metal from an ionic compound (ore).

It is used to convert metals into their oxides.

It is used to combine metals with non-metals.

It is used to measure the electrical conductivity of a solution.

What does 'Electro' mean in the context of electrolysis?

Electricity - the flow of electrons (e-) or ions.

Chemistry Electrolysis

Quiz

•

Science

•

10th Grade

•

Practice Problem

•

Medium

Aimee Bindon

Used 1+ times

FREE Resource

43 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the products of the reaction: Zinc + hydrochloric acid → _ + __?

Zinc chloride + hydrogen

Zinc oxide + water

Zinc sulfate + hydrogen

Zinc nitrate + oxygen

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electricity can be used in chemical reactions for:

Heating substances

Electrolysis

Catalysis

All of the above

3.

OPEN ENDED QUESTION

3 mins • 1 pt

What is electrolysis?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What are ionic compounds?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What is an anion?

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

What is a cation?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

What is an anode?

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Chemistry Electrolysis

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What are the products of the reaction: Zinc + hydrochloric acid → _ + __?