notes quiz Flashcards

1
Q

chemical bond

A

-attractive force between atoms or ions

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2
Q

why do atoms form bonds?

A

-to decrease potential energy
-to increase stability

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3
Q

valence electrons

A

-electrons in the outermost energy level

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4
Q

amount of valence electrons in group 1 of the periodic table

A

1

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5
Q

amount of valence electrons in group 2 of the periodic table

A

2

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6
Q

amount of valence electrons in group 13 of the periodic table

A

3

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7
Q

amount of valence electrons in group 14 of the period table

A

4

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8
Q

amount of valence electrons in group 15 of the periodic table

A

5

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9
Q

amount of valence electrons in group 16 of the periodic table

A

6

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10
Q

amount of valence electrons in group 17 of the periodic table

A

7

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11
Q

amount of electrons in group 18 of th periodic table

A

8

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12
Q

which element is an exception to the number of valence electrons by group? how many does it have/ what row is it in?

A

-helium
-2
-group 18 (its a noble gas)

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13
Q

ionic compound

A

-composed of positive and negative ions
-combined so that the numbers of positive and negative charges are equal
-neutral net charge

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14
Q

what does ionic bonding occur between and involve?

A

-a metal and a nonmetal
-the transfer of electrons between atoms

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15
Q

cations

A

-lose electrons
-positive charge

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16
Q

anions

A

-gain electrons
-negative charge

17
Q

formula unit

A

-the simplest whole number of ions in an ionic compound
-ex. MgCl2 (every 1 magnesium = 2 chlorine)

18
Q

what is the ionic charge of group 1 on the periodic table?

A

+1

19
Q

what is the ionic charge of group 2 on the periodic table?

A

+2

20
Q

what is the ionic charge of group 11?

A

+1

21
Q

what is the ionic charge of group 12

A

+2

22
Q

what is the ionic charge of group 13?

A

+3

23
Q

what is the ionic charge of group 15?

A

-3

24
Q

what is the ionic charge of group 16/

A

-2

25
Q

what is the ionic charge of group 17?

A

-1

26
Q

what is the ionic charge of group 18?

A

0