Karteikarten
Ohne Titel
Karten in diesem Stapel (15)
- 1Dalton's Atomic Theory1) all matter is made up of atoms
2) all atoms of an element are equal in mass & chemical properties
3) atoms are not created nor destroyed in chemical reaction
4) atoms combined in simple, fixed, whole # ratios to for compounds - 2MillikanDetermination of mass & charge of electrons
oil drop experiment - 3JJ ThompsonDiscovered electrons in 1897
used cathode ray tube
showed that matter contains negatively charged particles
proposed that electrons may be embedded in a sphere of positive charge - 4Ernest Rutherforddesigned experiment in 1907 to test JJ Thomson's "plum pudding" model of the atom (Gold Foil Experiment)
Determined empty space in atom and found nucleus
proposed neutrons
protons in nucleus - 5Chadwickdiscovered neutrons in 1932
- 6Diatomic MoleculesHydrogen
Nitrogen
Fluoride
Oxygen
Iodine
Chlorine
Bromine - 7atomic numberprotons
- 8Mass numberprotons + neutrons
- 9John Newlandarranged elements increasing order of atomic mass
- 10Demitri Mendeleevdeveloped periodic classification of elements
- 11Henry Moselyarranged elements according to atomic number
- 12Which group is radioactivetransition metals
- 13Which group is known as salt makersHalogens
- 14Which group is known to have little to no reactivityNoble gases
- 15which group is electrically and heat conductiveAlkali metals
Informationen
- Beschreibung
- 11th grade Chemistry Karteikarten am Ohne Titel, erstellt von Madison Kulhanek am 19/10/2022.
- Erstellt von
- Madison Kulhanek
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