CHEM 2060
Louisiana State University
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CHEM 2060CHEMISTRY- AS AS-Level Chemistry (New Spec) Notes. AS-LEVEL CHEMISTRY NOTES
- Other • 88 pages • 2021
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- $25.49
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SECTION 1: 
Atoms & Reactions 
1 Atomic structure & Isotopes 
• Atoms are made up of protons, electrons and neutrons 
• Neutral atoms have the same number of protons and electrons 
• You can work out numbers of protons, electrons and neutrons from the element symbol 
• To find the total number of electrons for positive ions take away the same number of electrons 
from the atom (e g 3 from a 3+ ion) and for negative ions add the same number of electrons 
Particle | Position | Relative M...
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