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9 Cards in this Set
- Front
- Back
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Atomic number |
¤Allatoms of an element have this same number of protons ¤Alsogives number of electrons if an atom is electrically neutral |
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Isotopes |
•Isotopesdiffer only in the number of neutrons.•e- number stays same, so atomic number is the same and chemical reactivity issimilar. •Atomicmass (N +P) differs between isotopes. |
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Covalent Bond |
bond—electrons are shared between the twoatoms…meaning the electrons orbit the nuclei of BOTH atoms. 2 shared electrons = single bond, 4shared = double bond and 6 shared = triple bond |
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Ionic Bonds |
– Electrons are either taken or givenresulting in a positive ion (cation) and a negative ion (anion). -Theopposite charges of the ions causes an elctromagneticattraction resulting in the two atoms forming an ionic compound. - Ionicbonds are easy to break |
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Polar |
Electrons of the covalent bond are unequally shared. |
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7 Properties of Water |
-Cohesion -Adhesion -Sovlency -High Surface tension -High Heat Capacity - High Heat of Vaporization -Varying density |
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cohesion |
The ability of water molecules to stickto one another (readily form hydrogen bonds) |
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Adhesion |
Ability of water to stick to other polarobjects |
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High Surface Tension |
-Water molecules at the surface cling moretightly to each other than to the air above -Mainly due to hydrogen bonding |
