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Group 1 and 2 metals

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Lesson outcome

Waxaan qeexi karaa qaabka falcelinta biraha kooxda 1 ee biyaha iyo biraha kooxda 2 ee asiidhka khafiifka ah, oo waxaan isbarbardhigi karaa falcelinta labada koox.

Introduction

In this lesson: I can describe the pattern in the reactivity of Group 1 metals with water and Group 2 metals with dilute acid, and compare the reactivity of the two groups. The properties of elements in each group of the periodic table change gradually down the group. Group 1 metals are soft, have lower densities than most other metals, and become more reactive down the group.

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The properties of elements in each group of the periodic table change gradually down the group. Group 1 metals are soft, have lower densities than most other metals, and become more reactive down the group. Group 1 metals are called alkali metals because they react with water to form an alkaline solution and hydrogen gas. Group 2 metals react with dilute acids to form a salt and hydrogen gas. Group 2 metals become more reactive down the group, but they are less reactive than Group 1 metals in the same period.

Worksheet

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Quizzes

  1. 1. What is a group in the periodic table?

    • A row of elements with the same number of electron shells.
    • Correct answer:A column of elements with the same number of electrons in their outer shell.
    • A row of elements arranged by increasing atomic number.
    • A column of elements with the same number of protons.

  2. 2. Which of the following statements correctly describes a chemical reaction?

    • Elements are arranged based on atomic mass.
    • Correct answer:Substances interact to form new products.
    • No new substances are formed.
    • It involves only physical changes.

  3. 3. A solution with a pH of 5 is ...

    • Correct answer:acidic.
    • basic.
    • alkaline.
    • neutral.

  4. 4. Which of the following statements correctly describes an acid?

    • Correct answer:It turns blue litmus paper red.
    • It feels slippery to the touch.
    • It turns red litmus paper blue.
    • Correct answer:It reacts with bases to form water and a salt.

  1. 1. Which of the following statements about Group 1 metals are correct?

    • They are hard metals.
    • Correct answer:They have lower densities than other metals.
    • Correct answer:They become more reactive down the group.
    • They do not react with water.
    • They form acidic solutions when reacting with water.

  2. 2. True or false? Sodium, calcium and potassium react with water or an acid to produce a solution with a pH greater than 7.

    • Correct answer:true
    • false

What pupils see

The same lesson as a pupil sees it. You can set any section as work on its own.

  • IntroductionPrepare
  • Starter quizActivate · 4 questions
  • Lesson videoLearn · Not available
  • Exit quizCheck · 2 questions
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