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| Smallest amount of an element that retains the elements properties |
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| No charge and are formed in the nucleus |
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| Positive charge and are found in the nucleus |
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| Negative charge and are found in an area called the electron cloud around the nucleus |
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| Amount of protons - and the amount of electrons in the balanced atom |
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Fill in the blank.
The number of __________ determines what element a substance is. |
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Fill in the blank.
The ____________ is one capital letter or one capital and one lower case letter |
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Fill in the blank.
The ________________ is the average number of particles in the nucleus |
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| Atomic mass - atomic number = |
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| #3 hold up 18 but bonds as if it were what? |
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| A horizontal row in which all elements have electrons in the same energy level. |
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| A vertical column where all elements have the same # of valence electrons |
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| What 3 principles is the periodic table organized around? |
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1. Atomic numbers increase
2. Periods have same energy levels.
3. Families have same number of valence electrons |
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| Valence electrons are the electrons in what shell? |
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| How many valence electrons does family 18? |
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| 8 valence electrons, the one exception is He which has 2. |
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| A force that holds two or more atoms together. It may be covalent, ionic, or metallic. |
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| It uses the atomic symbols to represent the nucleus and inner levels of electrons and dots for the valence electrons. |
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| Atoms bond in ways that will fill which shell? |
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| By gaining, losing, or sharing electrons. |
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| Sharing valence electrons. Usually single but can be double or triple. |
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| Formed by covalent bonding. |
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| It uses subscripts and element symbols to show the elements in a compound. |
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| An atom that has lost or gained valence electrons. |
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Term
Finish Mr. Brown's favorite joke.
An atom walks into a bar - |
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Definition
And tells the bartender "I've lost an electron!"
The bartender asks "Are you sure?"
The atom says "I'm positive." |
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| The attraction between positively and negatively charged ions. Ionic bonding forms crystals. |
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| Metal atoms share pools of electrons |
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| What does metallic bonding allow? |
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| Metals to conduct electricity and heat to be malleable and ductile. |
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| Metal to metal bonds what? |
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| Nonmetal to non-metal bonds what? |
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| Metal to nonmetal bonds what? |
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