Atoms and Elements 02
Metals make up most of the elements in the periodic table.

Atoms and Elements 02

This KS3 Science quiz will quiz you on atoms and elements. In 1661, Robert Boyle defined an element as a substance that could not be broken down into a simpler substance. At the start of the 20th century, scientists discovered that elements were made up from atoms which could be split into protons, neutrons and electrons. Now, we say that an element is a substance that contains only one type of atom. Each of the different atoms has a name and a chemical symbol. A chemical symbol always starts with a capital letter and is followed by either zero, one or two small letters e.g. I and Ir stand for iodine and iridium.

Chemical formulae are a quick way of writing down information about chemical substances - Cu is the shorthand for 'here we have one single atom of the element copper'.

Read More

The formula for water is H2O. Water is therefore not an element as it contains two different atoms - two atoms of hydrogen and one of oxygen. If there is no little number after a chemical symbol, it means there is only ONE atom. So in the formula H2SO4, there are 2 atoms of hydrogen (there is a small number 2 AFTER the symbol), only one atom of sulphur (there is NO small number after the symbol for sulphur) and 4 atoms of oxygen (can you see why?).

Read Less
Did you know...

You can play all the teacher-written quizzes on our site for just £9.95 per month. Click the button to sign up or read more.

Sign up here
  1. An element has.....
    The name of many elements ends in -ium
  2. How many atoms of sulphur are there in CuSO4?
    There is no small number after the chemical symbol for sulphur therefore there is only one atom
  3. Which elements are in CoCO3?
    Counting the capital letters in the formula immediately tells you that answers 2 and 3 must be incorrect (there are 3 capitals so there must be three elements). It is then simply a case of looking up the symbols on the periodic table or in a list of elements
  4. Which are the three magnetic elements?
    Copper, aluminium and zinc are not attracted by magnets
  5. Which elements are in SO2?
    If you did not know the answer, you could easily have looked up the chemical symbols to find out what elements they represent
  6. Most of the elements in the periodic table are.....
    About three-quarters of all elements are metals
  7. The smallest part of an element that retains the identity (and the chemical properties) of that element is ...
    The idea of atoms has been around for thousands of years but it was only during the last two hundred years that scientists have found evidence they exist. In 1981, a very powerful microscope was developed that can be used to 'see' actual atoms
  8. What is the correct formula for H-H?
    This is a simple representation of a molecule of the element hydrogen. You know that it is an element because there is only one type of atom in the formula
  9. Which of the following metals is a liquid at room temperature?
    It is a toxic (poisonous) metal
  10. What is the correct symbol for Iron?
    A symbol MUST have ONE capital letter - no more, no less. That means the correct answer cannot be either options 2 or 3. Option 4 is tempting, but is the symbol for the metal iridium. The Latin word for iron is ferrum. Many symbols come from the Latin names for the elements. Iron is very common, so, if you didn't already know it, it should not be too long before you have to remember that Fe is the chemical symbol for iron

Author: Sue Davison

The Tutor in Your Computer!

Quiz yourself clever - 3 free quizzes in every section

  • Join us (£10/month) to play over 4,000 more quizzes
  • Reinforce your school learning in the comfort of home
  • Build your confidence in National Curriculum subjects
  • Test yourself to identify gaps in learning
  • Revise fast for tests and exams

© Copyright 2016-2017 - Education Quizzes
TJS - Web Design Lincolnshire

Valid HTML5

We use cookies to make your experience of our website better.

To comply with the new e-Privacy directive, we need to ask for your consent - I agree - No thanks - Find out more