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Phys Sci Studystack
Study stack for Physical Science
Question | Answer |
---|---|
Anion | Negative Ion |
Cation | Positive Ion |
Octet Rule | Elements like to bond to give their valence shell 8 electrons. |
Electronegativity | Ability to hold and get electrons. |
Flourine | Element with greatest EN (4.0) |
Covalent Bond | Bond between nonmetals, electrons shared by the two atoms, melts more easily than an Ionic bond. |
Ionic Bond | Bond between a Metal and a Nonmetal, electrons taken by one atom and held together by ionic attraction |
Metallic Bond | Bond between a Metal and a Metal, electrons distributed equally |
Francium | Element with lowest EN (0.7) |
Hydrogen, Nitrogen, Oxygen, Flourine, Chlorine, Bromine, Iodine | The Diatomic elements. |
Hydrogen, Lithium, Beryllium, Boron | Exceptions to the octet rule. |
Dmitri Mendeleev | Arranged the modern Periodic Table |
Johann Dobereiner | Arranged the elements into "Triads" |
Second Law of Thermodynamic | All natural processes move towards a state of minimum energy. |
Electron Affinity | How much an atom wants electrons |
Electron Sea Theory | Atoms with weak ENs usually have only a few loosely held valence electrons. These atoms like to share their electrons. |
117 | Number of currently discovered elements |
92 | Number of naturally occuring elements |
Henry Moseley | Used X-Rays to count protons to find atomic numbers |
Luster, Malleable, Conductive, Ductile | Properties of metals |
Lackluster, Brittle, Insulative, non-ductile | Properties of nonmetals |
Period Number | Tells how many main energy levels the elements in that period have |
Family Number | Tells what kind of properties you can expect that element to have, and what it will bond with. |
Element sizes increase as they | go down the periodic table, and to the right |
Element sizes decrease as they | go up the periodic table, and to the left |