Chemistry unit 1- atomic structure and bonding

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What does the atomic number mean?
Number of protons
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What does the atomic mass mean?
number of protons and neutrons
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What does the Aufbau principle state about electronic configuration?
The aufbau principle states that you must fill the electrons in the bottom shell first, then afterwards the subshells before moving onto the next shell.
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What do you do when atoms have either lost or gained electrons in electronic configuration?
Gained- negative charge therefore the add a number to the electronic configuration. If an electron is lost- a postive charge thereofre you subtract a number from the electronic configuration.
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Why do atoms form chemical bonds?
To get full outer electron shells.
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What is a ionic bond?
An electrostatic attraction between positive and negative electrons. It is the transfer of electrons from metals to non-metals that form ions.
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How do you determine the strength of an ionic bond?
The ionic charge and ionic radius determines the atom charge/size ratio
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What is a cation?
A positive ion
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what is an anion?
A negative ion
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What is a lone pair
A non-binding pair of electrons.E.g. NH3 + H
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What is a dative covalent bond?
When an element shares both of it's electrons. This attraction is represented with an arrow.
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What is the relationship between bonds?
Single bonds are the weakest bond because it doesn't require much energy to break the bonds. Double bonds have intermediate strength. Finally triple bonds have the strongest bonds because it requires more energy to break those bonds.
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What is an organic compound?
It is a compund that contains more than one carbon atom in a carbon chain
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Methane is a what type of structure?
tetrahedral structure because the bonds are as seperated as possible because the negative ions repel each other.
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Other cards in this set

Card 2

Front

What does the atomic mass mean?

Back

number of protons and neutrons

Card 3

Front

What does the Aufbau principle state about electronic configuration?

Back

Preview of the front of card 3

Card 4

Front

What do you do when atoms have either lost or gained electrons in electronic configuration?

Back

Preview of the front of card 4

Card 5

Front

Why do atoms form chemical bonds?

Back

Preview of the front of card 5
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