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S3 Chemistry > Types of Bonding > Flashcards

Types of Bonding Flashcards

1
Q

why do atoms need to form bonds?

A

to gain a full outer shell of electrons and become stable

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2
Q

why dont noble gases from bonds?

A

they already have a full outer shell of electrons

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3
Q

which type of elements form covalent bonds?

A

non-metals

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4
Q

how do atoms form covalent bonds?

A

they share pairs of electrons

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5
Q

what does diatomic molecule mean?

A

contain 2 atoms that are chemically bonded together

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6
Q

name the 7 diatomic elements?

A

hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine

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7
Q

how can we remember the 7 diatomic elements?

A

Have No Fear In Ice Cold Beer

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8
Q

what are covalent bonds held together by?

A

electrostatic forces of attraction between the positive nuclei and negative shared pair of electrons

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9
Q

whats a diatomic element?

A

elements that exist of molecules made up of 2 atoms and NOT 2 different elements

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10
Q

what group are all diatomic elements?

A

group 7

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11
Q

why is astatine not a diatomic element?

A

it is man made

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12
Q

what does the line in full structural formula tell us?

A

how many covalent bonds were made

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13
Q

what no. is the prefix mono?

A

one

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14
Q

what no. is the prefix di?

A

two

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15
Q

what no. is the prefix tri?

A

three

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16
Q

what no. is the prefix tetra?

A

four

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17
Q

what no. is the prefix penta?

A

five

18
Q

what no. is the prefix hexa?

A

six

19
Q

can you use SVSDF when their are prefixes in the name?

A

no

20
Q

what are the four shapes of molecules called?

A

angular, trigonal pyramidal, tetrahedral and linear

21
Q

how can we tell the shape of a molecule?

A

by the valency of the atom telling us how many bonds it can form

22
Q

if an atom can form 2 bonds whats the shape called?

A

angular

23
Q

if an atom can form 3 bonds whats the shape called?

A

trigonal pyramidal

24
Q

if an atom can form 4 bonds whats the shape called?

A

tetrahedral

25
Q

if a molecule has double bonds what shape is it?

A

linear

26
Q

what elements form ionic bonds?

A

metals and non metals

27
Q

how do we share electrons in ionic bonds?

A

they are transferred from one atom to another

28
Q

what happens to the charge when electrons are shared in ionic bonds?

A

they are no longer electrically neutral

29
Q

when an atom looses an electron does it become positively or negatively charged?

A

positively charged

30
Q

when an atom gains an electron does it become positively or negatively charged?

A

negatively charged

31
Q

why do group 0 elements never form ions

A

they already have a full outer shell of electrons

32
Q

what is the charge of an ion?

A

its the same number of atoms needed to gain or lose to acheive a full outer shell

33
Q

in ionic bonds do metals loose or gain electrons?

A

they always loose electrons

34
Q

in ionic bonds do non-metals loose or gain electrons?

A

they always gain electrons

35
Q

what is a group ion?

A

ions that contain more than one type pf atom

36
Q

what type of structure do ionic compounds have?

A

ionic lattice

37
Q

why do ionic compunds form ionic lattices?

A

cause they have an attraction between oppositeky charged ions so the ions are arranged that the same charge is not near each other

38
Q

what are the two types of structures covalent substances can form?

A

covalent molucule and covalent network

39
Q

do covalent molecules have high or low melting and boiling points?

A

low

40
Q

do covalent networks have high or low melting and boiling points?

A

high

S3 Chemistry (1 decks)

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