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35 Cards in this Set
- Front
- Back
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Atomic Number |
The number of protons or electrons. |
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Atomic mass |
The average mass off all of the isotopes. |
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Isotopes |
An element with the same number of protons, but a different number of neutrons. |
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Element |
A substance made up of only one kind of atom.
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Compound |
Different kinds of atoms chemically bonded together in fixed chemical proportions. |
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Fixed chemical proportions |
Means that a compound always has the same atoms in it in the same ratio. |
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Period Number |
Shell number is the same. (across the periodic table). |
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Group elements |
Have the same electrons in the outer shell. (columns of periodic table). |
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Ions |
Charged Atoms |
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Atomic size (Atomic radius) |
Size decrease moving left to right across periodic table, even though there's still an increase in the number of protons, neutrons and electrons. |
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Ionization energy |
Energy needed to remove one electron from an atom. (cation, positive ion). |
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Electronegativity |
An atom's ability to attract (pull) electrons towards itself. |
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Configuration |
How it's laid out. Refers to the number of electrons in an atom and how they are arranged.Electron configuration can be expressed in a diagram or as a series of numbers and commas. |
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Cation Ion |
Positively charged |
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Anion |
Negatively charged |
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Metals will donate electrons |
Non-metals will gain electrons |
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Valency |
Number of bonds an atom can make |
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Di |
Two |
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Low electronegative |
Easier to lose electrons
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Exothermic reactions |
Release heat energy |
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Endothermic Reactions |
Heat energy is absorbed |
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Acids |
Corrosive substances, react with solid substances. |
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Bases |
Bitter taste, slippery,soapy,can be corrosive. |
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OH |
Hydoxide |
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SO4 |
Sulfate |
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Co3 |
Carbonate |
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NO3 |
Nitrate |
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HSO3 |
Hydrogen Sulfate |
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HCO3 |
Hydrogen Carbonate |
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Hydroxide |
Formed when Hydrogen and Oxygen bond together. |
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Hydrogen Carbonate |
Formed when Hydrogen, Carbon and Oxygen bond together. |
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MONO |
2 |
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TRI |
3 |
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TETRA |
4 |
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PENTA |
5 |
