Understanding Half Equations in Chemistry

Understanding Half Equations in Chemistry

Assessment

Interactive Video

Chemistry, Science

9th - 12th Grade

Easy

Created by

Mia Campbell

Used 4+ times

FREE Resource

This video tutorial focuses on understanding and writing half equations in chemistry. It explains the concept of half equations, which show the changes occurring to a single element in a chemical reaction, specifically in terms of electron loss or gain. The video introduces the OIL RIG acronym to help remember that oxidation is the loss of electrons and reduction is the gain of electrons. Examples using sodium and sulfur are provided to illustrate these concepts. The video also includes practice questions to test understanding and concludes with a call to action for viewers to subscribe.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the acronym OIL RIG stand for in the context of half equations?

Oxidation Involves Light, Reduction Involves Gravity

Oxidation is Light, Reduction is Gravity

Oxidation is Gain, Reduction is Loss

Oxidation is Loss, Reduction is Gain

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the half equation Na → Na⁺ + e⁻, what process is sodium undergoing?

Sublimation

Oxidation

Reduction

Neutralization

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents a reduction process?

Fe → Fe²⁺ + 2e⁻

Mg → Mg²⁺ + 2e⁻

Cl₂ + 2e⁻ → 2Cl⁻

Na → Na⁺ + e⁻

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the half equation Li → Li⁺ + e⁻, what is happening to lithium?

It is being ionized

It is being neutralized

It is being reduced

It is being oxidized

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many electrons are needed to balance the half equation P + e⁻ → P³⁻?

1

2

3

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the equation Ca²⁺ + 2e⁻ → Ca, what is happening to calcium?

It is being dissolved

It is being reduced

It is being oxidized

It is being evaporated

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct half equation for the oxidation of magnesium?

Mg²⁺ + 2e⁻ → Mg

Mg + 2e⁻ → Mg²⁺

Mg → Mg²⁺ + 2e⁻

Mg → Mg⁺ + e⁻

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