Karteikarten
Ohne Titel
Karten in diesem Stapel (11)
- 1protonsymbol-p
location- nucleus
relative mass- *1*
relative charge- 1+ - 2neutronsymbol- n
location- nucleus
relative mass- *1*
relative charge- neutral - 3electronsymbol- e
location- in the shells around the nucleus
relative mass- nearly nothing
relative charge- 1- - 4atomic numberEach element has a set number of protons that is the atomic number of an element.
(protons and electrons are the same number) - 5Mass numberthe number of protons and the number of neutrons
- 6isotopesan element with a different number of neutrons
- 7elementa material with only one type of atom
- 8compoundtwo or more elements bonded together
- 9shellselectrons in atoms occupy energy levels also called electron shells, outside the nucleus. Different shells can hold different maximum number of electrons.
- 10average atomic massexample
80% of all boron is B 11 (6 neutrons)
20% of all boron is B 10 (5 neutrons)
80x11=880 20x10=200
1080/100=10.8 - 11—
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- Beschreibung
- Karteikarten am Ohne Titel, erstellt von Erin Howe am 16/01/2019.
- Erstellt von
- Erin Howe · Jan 2019
- Aktualisiert
- 16 Jan 2019
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