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Common elements

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Lesson outcome

Waxaan si cad u sheegi karaa sifooyinka, isticmaalka iyo khataraha hal ama laba curiye oo caadi ah.

Introduction

In this lesson: I can communicate clearly some properties, uses and dangers of one or two common elements. Hazard symbols are used to decribe the dangers of substances. Each element has its own distinct properties.

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Hazard symbols are used to decribe the dangers of substances. Each element has its own distinct properties. Metalloid elements have some properties of metals and some properties of non-metals.

Worksheet

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Quizzes

  1. 1. What is an element?

    • a substance made from two or more different types of atoms bonded together
    • Correct answer:a substance made from one type of atom only.
    • a substance made from different types of atoms mixed together

  2. 2. Which of these is a common property of metals?

    • Brittle
    • Insulator of heat
    • Correct answer:Shiny
    • Poor conductor of electricity

  3. 3. Where are metals typically located on the periodic table?

    • Top right
    • Bottom left
    • Correct answer:Left side and centre
    • Only in the middle rows

  4. 4. Which symbol suggests there may be a fire risk/hazard?

    • Correct answer:a red and white hazard sign with a flame symbol on the bottom of the sign is a red triangle with a black flame in the center of the sign
    • a red triangle shaped sign on a white background with a white background and a red triangle shaped sign on a white background with a white background
    • a yellow triangle sign with a black and white image of a person falling from a diving hazard sign on a white background

  1. 1. What does a hazard symbol on a substance indicate?

    • The substance is safe to use.
    • The substance is a metalloid.
    • Correct answer:The substance has certain risks associated with it.
    • The substance is a metal.
    • The substance is a non-metal.

  2. 2. Which of the following is a characteristic of metalloids?

    • They all conduct electricity as well as metals.
    • Correct answer:They are all solid at room temperature.
    • Correct answer:They have properties of both metals and non-metals.
    • They are all gases at room temperature.

  3. 3. A hazard symbol is used to show...

    • Correct answer:a potential source of harm.
    • a high risk of an accident.
    • a low risk of an accident.

  4. 4. Which of the following hazard symbols shows that a substance is very bad for the environment, and if swallowed could kill you or other organisms that consume it?

    • Correct answer:a sign with a skull and crossbones in the middle of the sign is red and white with a black outline of a skull and crossbone on the bottom of the sign
    • Correct answer:a red and white sign with a picture of a tree and a bird in the middle of the sign
    • a red and white sign with a black and white image of a bullet hitting the center of the sign
    • a red and white hazard sign with a black exclamation symbol on the bottom of the sign

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
  • Exit quizCheck · 4 questions
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