Elements
Science: KS3, topic 2.3.2
Elements
If something is made completely of one type of atom, it is called an element.
Elements
- All the atoms in an element are identical in mass and properties.
- Elements can be solid, liquid or gas.
- It doesn’t matter what the physical state is, as long as all the atoms are identical.
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The periodic table
- All the different types of atom are listed in the periodic table.
- There are over 100 different atoms, and so over 100 different elements. Some examples of elements are:
- Oxygen is made up of only oxygen atoms.
- Silver is made up of only silver atoms.
- Copper is made up of only copper atoms.
Test yourself on Elements
What is an element?
Which of these are true of elements?
A sample contains both copper atoms and oxygen atoms mixed together. Why is this not an element?
Scientists discover a brand new type of atom that has never been seen before. Where would this new atom type be recorded?