Group 1 (alkali Metals) - Lithium, Sodium And Potassium
Overview
Drop a tiny piece of potassium into water and it bursts into a lilac flame, skittering across the surface while hydrogen gas fizzes away. The alkali metals in Group 1 of the Periodic Table are among the most reactive elements, and their behaviour reveals powerful patterns about how the table is organised.
In this lesson you will compare the reactions of lithium, sodium, and potassium with water and air, explain the trends down the group, and learn to predict the properties of other Group 1 elements you have not seen.
Objectives
- Understand how the similarities in the reactions of these elements with water provide evidence for their recognition as a family of elements
- Understand how the differences between the reactions of these elements with air and water provide evidence for the trend in reactivity in Group 1
- Use knowledge of trends in Group 1 to predict the properties of other alkali metals
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Group 1 (alkali Metals) - Lithium, Sodium And Potassium. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- How many electrons do Group 1 elements have in their outer shell? A) 1 B) 2 C) 7 D) 8 Answer: A
- Which Group 1 metal is the most reactive? A) Lithium B) Sodium C) Potassium D) All equally reactive Answer: C
- Group 1 metals are stored under oil to prevent: A) Melting B) Evaporating C) Reacting with air and water D) Dissolving Answer: C
- Going down Group 1, the melting point: A) Increases B) Decreases C) Stays the same D) Fluctuates Answer: B
- When sodium reacts with water, the products are: A) Sodium oxide and hydrogen B) Sodium hydroxide and oxygen C) Sodium hydroxide and hydrogen D) Sodium chloride and water Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Practice Mock Questions
Want to practice mock questions on Group 1 (alkali Metals) - Lithium, Sodium And Potassium? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
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