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Chemistry library
Course: Chemistry library > Unit 1
Lesson 1: Introduction to the atom- Introduction to chemistry
- Preparing to study chemistry
- Elements and atoms
- Average atomic mass
- Worked example: Atomic weight calculation
- The mole and Avogadro's number
- Atomic number, mass number, and isotopes
- Worked example: Identifying isotopes and ions
- Isotope composition: Counting protons, electrons, and neutrons
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Isotope composition: Counting protons, electrons, and neutrons
You might need: Calculator,Periodic table
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