Atoms and Elements (A2 - B1)

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• Select section Introduction

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  Introduction

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  An atom is the smallest building block of everything that exists. The smallest object you can see under a microscope has more than 10 billion atoms . There are over a hundred different types of atoms, that we call elements. They form the world we live in. Well known elements are hydrogen, oxygen, iron, or lead. When two elements get together, they form a compound. For example, water has two atoms of hydrogen and one atom of oxygen. Atoms all have about the same size, but they have different weights. Plutonium is one of the heaviest atoms , about 200 times heavier than hydrogen , which is the lightest element.

  Image: "Atom Model Vector" via FreeSVG, Public Domain, CC0

  
  
  

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  • billion = a thousand million; 1 000 000 000
  • building block = the pieces or parts of an object
  • compound = made up of two or more elements
  • hydrogen = a colourless gas that is the lightest of all elements
  • iron = a hard metal that is used to make steel
  • lead = a soft, grey metal that melts very easily; it can be found in pencils
  • oxygen = gas that is in our air and which we need to breathe
  • weight = how heavy something is
• Select section Information

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  Information

  • Select activity Parts of an Atom

    

    Parts of an Atom Page
  • Select activity Properties of an Atom

    

    Properties of an Atom Page
  • Select activity Atomic Energy

    

    Atomic Energy Page
  • Select activity Compounds

    

    Compounds Page
  • Select activity Important Elements

    Important Elements

  • Select activity Hydrogen

    

    Hydrogen Page
  • Select activity Helium

    

    Helium Page
  • Select activity Nitrogen

    

    Nitrogen Page
  • Select activity Iron

    

    Iron Page
  • Select activity Carbon

    

    Carbon Page
  • Select activity Chlorine

    

    Chlorine Page
  • Select activity Aluminium

    

    Aluminium Page
  • Select activity Gold

    

    Gold Page
  • Select activity Atoms and Elements - Word List (PDF)

    

    Atoms and Elements - Word List (PDF) File
• Select section Videos

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  Videos

  • Select activity Atoms, Molecules and Compounds

    

    Atoms, Molecules and Compounds Page
  • Select activity Atoms Explained

    

    Atoms Explained Page
  • Select activity What is an Isotope ?

    

    What is an Isotope ? Page
  • Select activity The Periodic Table

    

    The Periodic Table Page
• Select section Tasks and Exercises

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  Tasks and Exercises

  • Select activity Multiple Choice Test 1

    

    Multiple Choice Test 1 Page
  • Select activity Multiple Choice Test 2

    

    Multiple Choice Test 2 Page
  • Select activity TRUE or FALSE 1 ?

    

    TRUE or FALSE 1 ? Page
  • Select activity TRUE or FALSE 2 ?

    

    TRUE or FALSE 2 ? Page
  • Select activity Words and Definitions 1

    

    Words and Definitions 1 Page
  • Select activity Words and Definitions 2

    

    Words and Definitions 2 Page
  • Select activity Match the Sentence Parts

    

    Match the Sentence Parts Page
  • Select activity Elements and Their Features

    

    Elements and Their Features Page
  • Select activity Atoms - Missing Word Cloze

    

    Atoms - Missing Word Cloze Page
  • Select activity Carbon - Multiple Choice Cloze

    

    Carbon - Multiple Choice Cloze Page
  • Select activity Crossword 1

    

    Crossword 1 Page
  • Select activity Crossword 2

    

    Crossword 2 Page
  • Select activity Word Search 1

    

    Word Search 1 Page
  • Select activity Word Search 2

    

    Word Search 2 Page
• Select section End of Course Test

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  End of Course Test

  • Select activity Atoms and Elements - Test (PDF)

    

    Atoms and Elements - Test (PDF) File
  • Select activity Atoms and Elements - Key (PDF)

    

    Atoms and Elements - Key (PDF) File
• Select section Related Units

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  Related Units

  • Select activity Electricity (B1 - B2)

    

    Electricity (B1 - B2) URL