1. C2.1 The periodic table of elements
Elements are pure substances that cannot be broken down into simpler substances
Watch for an introduction:
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2. C2.1 The periodic table of elements

3. C2.1 Atomic structure
Elements behave differently because of the structure of atoms
Scientists developed a simple model of the atom to explain the properties of elements
In this model, most of the mass of the atom is concentrated in an extremely small, dense, positively changed core called the nucleus
Read Section 5.4
Proton
Neutron
Electron
Electric charge
Positive
Neutral
Negative
Symbol p+ n0
e -
Location
nucleus
Orbit around the nucleus

4. C2.1 How to calculate protons, neutrons, and electrons
Protons (+): equal to the atomic number of an element
Electrons (-): equal to protons because you need a neutral atom
Neutrons (Neutral): You subtract the atomic number from the mass number

5. C2.1 Electrons

6. Bohr-rutherford diagrams

7. Bohr-rutherford diagrams
Additional Support on how to create these can be found here: