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chemistry > Explaining the period table > Flashcards

Explaining the period table Flashcards

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1
Q

what is the electron

A

sub-atomic particles that carry a negative charge

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2
Q

what is the proton

A

sub-atomic particle that carries a positive charge

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3
Q

what is a neutron

A

sub-atomic particle that carries no charge (is neutral)

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4
Q

what is the electrical charge of protons

A

+

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5
Q

what is the electrical charge of electrons

A

-

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6
Q

what is electrical change of neutrons

A

0

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7
Q

what is does it mean when a atom is neutral and why

A

it has no charge and this happened because there is an equal number of protons and electrons

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8
Q

what does it mean for an element to be classified as list a

A

the element symbol is the first letter of the name

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9
Q

what does it mean for an element to be classified as list b

A

the element symbol is the symbol two letters of the name

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10
Q

what does it mean for an element to be classified as list c

A

the element symbol is the first letter and some other letter in the name

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11
Q

what does it mean for an element to classified as group d

A

the element symbol is based and another name usually Latin

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12
Q

what is the atomic number

A

is the number located above the element symbol
the number of protons and electrons

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13
Q

what is the atomic mass

A

found below the element symbol
the mass of an atom in atomic mass units (amu)

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14
Q

what is the mass number

A

same as the atomic mass but rounded to the nearest to the nearest number
the total number of protons plus the total number of neutron in the nucleus

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15
Q

what is does 2 8 8 18 stand for in the Bor-Rutherford diagram

A

it stands for the max amount of electrons per shell

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15
Q

what is does 2 8 8 18 stand for in the Bor-Rutherford diagram

A

it stands for the max amount of electrons per shell

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16
Q

what is the group names in the period table

A

group 1- alkaline metals
group 2- alkaline earth metals
groups 3 to 12- transition metal
group 17- halogens
groups 18- Nobel gases

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17
Q

what are isotopes atoms

A

atoms with the same number of protons and electrons but different numbers of neutrons. they are commonly written with new atomic mass after the element

18
Q

what changes from atom to atom in isotopes atom

A

the number of neutrons

19
Q

what does a isotopes atom

A

element - number ex carbon-13

20
Q

how do you find the amount of neutrons

A

number of protons - mass number = neutrons

21
Q

how many electrons are the first shell

A

2

22
Q

how many electrons are in the second shell

A

8

23
Q

how many electrons are third shells

A

8

24
Q

how many electrons are in fourth shell

A

18

25
Q

how to find out the number of valence electron

A

in groups 1 and 2, 1 and 2 will be the valence electron
in groups 13-18, would be the number of the group its in subtracting 10

26
Q

what is a molecule

A

a molecule is atoms joined together

27
Q

what is a molecular element

A

a molecule consisting of atoms of the same element

28
Q

what is a another word for molecular element

A

diatomic element

29
Q

what is an example of a molecular element

A

H2

30
Q

what is molecular compound

A

molecules that consist of 2 or more different elements

31
Q

what is an example of a molecular compound

A

H2O

32
Q

what is a subscript

A

a subscript is a number written in the lower left corner beside the element
this indicates the number of atoms

33
Q

what does it mean if a subscript is outside of a bracket

A

it multiplies all the elemenrs inside brackets

34
Q

what is a coefficient

A

the number written in front of chemical symbols indicates the number of molecules
it multiplies the number of atoms in each element of the formula

35
Q

how do atoms achieve stability

A

they will either lose or gain electrons

36
Q

how to tell if you need to gain electrons to get a stable octet

A

if the amount of electrons in the outermost shell is closer to to the limited amount (2-8-8-18) in the shell

37
Q

how to tell if you need to lose electrons to get a stable octet

A

if the amount of electrons in the outermost shell is farther from the limited amount in the shell

38
Q

what is a cation

A

a postively charged ion and needed to lose electrons

39
Q

what is an anion

A

a positively charged ion that needs to gain electrons

40
Q

what is a ion

A

either has a positive or negative charge and is caused by the uneven amount of protons

41
Q

what is a ionic bond

A

metal + non metal

42
Q

what is a covalent bond

A

non- metal + non- metal

43
Q

metallic bond

A

metal + metal

chemistry (3 decks)

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