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Chemistry > Chemical Bonding > Flashcards

Chemical Bonding Flashcards

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1
Q

Chemical bonding

A

The way in which the elements are joined together to form a new substance

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2
Q

Molecule

A

Group of atoms held together by covalent bonding

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3
Q

Atom

A

Smallest constituent unit of ordinary matter that has the properties of a chemical element

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4
Q

Electron valence

A

Number of electrons

Important to form a new substance

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5
Q

Atomic number

A

Number of protons

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6
Q

Energy levels

A 
Orbits restricted with certain energies
This orbits contain a certain maximum of electrons:
1. 2é
2. 8é
3. 18é
4. 32é
5. 32é
6. 18é
7. 8é
8. 2é
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7
Q

Electron configuration

A

Shows the number of electrons in each sublevel, in each energy level of the atom

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8
Q

Bond energy is required to

A

Break bonds

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9
Q

Polar molecule

A

Has a partial positive end and a partial negative end (unequal sharing)

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10
Q

Ion
Cation
Anion

A

An atom that is no longer electrically neutral because it has lost or gained valence electrons
Ion with positive charge (lost)
Ion with negative charge (gained)

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11
Q

Ionic bonding

A

Attraction between positive and negative charged ions

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12
Q

Types of chemical bonds

A

Ionic, covalent, polar covalent, metallic

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13
Q

Ionic bond

A

Different: 1 or more electrons are transferred to form oppositely charged ions
Nonmetal; metal ions
High melting and boiling points
Large collection of oppositely charged ions

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14
Q

Covalent bond

A 
2 identical atoms share electrons
Single, double or triple
Nonmetal atoms
Gas, liquid, solid
Low melting and boiling points
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15
Q

Bond

A

Force that holds two or more atoms together

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16
Q

Polar covalent bonding

A

Atoms are not so different that electrons are completely transferred, but different enough so that unequal sharing goes é result

17
Q

Metallic bonding

A 
Formed when metal atoms share their v.é
É do not bond to one atom
"Sea of electrons"
Electrons always move
Usually solids: metals
18
Q

Chemical formula

A

Group of symbols and numbers that represent the elements and the number of atoms of each element that make up a compound

19
Q

Energy level is determined by

A

The period and number of electrons is given by the atomic number of the element

Chemistry (5 decks)

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