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Chem test #3

QuestionAnswer
Covalent: metal or non metal? Non metals
Covalent: with or without prefixes? With prefixes
Covalent: shares electrons? Yes
Covalent: polar or non polar? Both depending on electro negativity difference
Covalent: non polar characteristics? Water resistant & dissolvable in other non polar molecules
Covalent: polar characteristics? Dissolves in water
Covalent: does it conduct electricity? No
Covalent: melting points? Very low
Ionic: metals or non metals? Both
Ionic: with or without prefixes? Without (Roman numerals on transition metals)
Ionic: Shares electrons? No (transferring electrons) metal——-> non metal
Ionic: called? Cations (+) Anions(-)
Ionic: dissolves in water? Yes
Ionic: conducts electricity? Yes (in solution)
Ionic: melting points? Very high
Mono One (only used on second element)
Di 2
Tri 3
Tetra 4
Penta 5
Hexa 6
Hepta 7
Octa 8
Nona 9
Delta 10
Polar The more electro negative (+) atoms pulls the electrons density towards itself
Insoluble 0.0-0.4
Slightly soluble 0.5-1
Very soluble 1.1 and up
Tetrahedral -4 atoms bonded to central atom -0 lone pairs on central atom -symmetrical (non polar)
Trigonal Pyramid -3 atoms bonded to central atom -1 lone pair on central atom - bent polar
Trigonal Planner -3 atoms bonded to central atom -0 lone pairs on central atom -Symmetrical=non polar
Bent - 2 atoms bonded to central atom -1 or 2 lone pair on central atom -bent=polar
Linear -2 atoms bonded to central atom -0 lone pairs on central atom -symmetrical= non polar
London Dispersion Force Weakest inter molecular force that causes distributions of electrons in the cloud.
Inter molecular In the molecules
Diatomic molecules composed of only two atoms, of the same or different chemical elements
7 diatomic molecules hydrogen (H), nitrogen (N), oxygen (O), fluorine (F), chlorine (Cl), bromine (Br), and iodine (I)
Non polar covalent 0-0.5
Polar covalent 0.6-1.7
Created by: 21violap
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