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Atom Flashcards

Physical Science Atom and Periodic table Flashcards

TermDefinition
metalliods -semiconductors-border the zigzag-1/2 complete set of electrons-propertys of metal and nonmetal-shiny but brittle-good conducter of electricity
metals -most elements-few electrons on butter energy level-solid at room temp=good conductors-shiny-malleable-right of zigzag
nonmetals -left of zigzag-have almost 1/2 complete set of electrons-1/2 are ases at room temp-property are almost opposite of metals-not shiny-poor conductors-not malleable or ductile
transition metals -metals-1 or 2 electrons in outer energy levels-less creative than Alikine earth metals-shiny and good conductors-2 vancle electrons
Alkali metals -metals-1 outter engr. level electrons-very reative-never found uncombined in nature- Most creative metal
Alaline Earth -metals- 2 electrons in outer energy levels-very creative but less creative than Alkali Metals
Halogens -nonmetals-7 electrons in outer energy levels-very reative-most creative nonmetal-never uncombined in nature-poor conductors
noble gases -nonmetal-8 (except helium it has 2) electrons outer energy levels-gases at room temp-full set of electrons-most UNreative nonmetal-electrons don't usually react with other elements
Scientists 1 Demoncritis-end up with a particle that can't be cutDalton- Mae up the atomic theory Thomas-discovered positive and negative charged particles, called protons and electrons. Made the Plums-Pudding Model
Scientists 2 Rutherford- some protons deflected the gold sheet, he found out most atoms are empty space. He discovered the nucleus. Bohr- electrons move around in certain paths or energy level. Heisnburg & Schrodinger- no exact paths, paths can't be pedicted.
Scientists 3 Heisnburg & Schrodinger- no exact paths, paths can't be pedicted. called electron clouds
Created by: BCE