Year 8 Chemistry Revision

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1.
period
2.
group
3.
element
4.
atom
5.
compound
6.
molecule
7.
mixture
8.
electron
9.
nucleus
10.
proton
11.
neutron
12.
alphadecay
13.
betadecay
14.
gammadecay
15.
isotope
16.
halflife
17.
atomicnumber
18.
atomicmass