1724308
Beschreibung
Mindmap von Hannah Wills, aktualisiert more than 1 year ago
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Erstellt von Hannah Wills
vor fast 10 Jahre
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Additional Science - Chemistry
- Atomic structure and the periodic table
- Atoms and the periodic table
- Dmitri Mendeleev
- published the periodic table
- arranged the elements known at the time in order of relative
atomic mass
- published the periodic table
- Alkali metals (group 1) Halogens (group 7) Noble gases
(group 0) Transition metals Metals and non-metals
- The atomic number (also called the proton number) is the
number of protons in an atom.
- The mass number (also called the nucleon number) is the
total number of protons and neutrons in an atom.
- The mass number (also called the nucleon number) is the
total number of protons and neutrons in an atom.
- Proton: charge = +1 mass = 1 Neutron: charge = 0 mass = 1
- Electron: charge: -1 mass: 0.0005 (almost zero)
- Electron: charge: -1 mass: 0.0005 (almost zero)
- Most elements exist in a number of different forms or
varieties called isotopes. Isotopes have the same number of
protons but different numbers of neutrons, which gives them
a different total mass.
- Dmitri Mendeleev
- Atoms and the periodic table
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