Electrochemistry Word Problems Worksheet With Answers Page 3
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3atomic number –
identifies the element by expressing the number of protons in it
•
Bohr model –
diagram of an atom of an element showing the protons & neutrons in the
•
nucleus, the number of electron orbitals and number of electrons in each orbital
Compound -
2 or more
that are chemically combined
ELEMENTS
•
Electron –
negatively charged subatomic particle with a mass of about 0 orbiting the
•
nucleus of an atom (in the electron cloud)
electron cloud –
area (zone) where electrons are found orbiting the nucleus of an atom
•
element -
substance made up of only 1 type of atom
•
molecule -
2 or more
that are chemically combined
ATOMS
•
neutron –
subatomic particle with no charge (neutral) & having a mass of 1 amu which is
•
located in the nucleus of an atom
nucleus –
central portion of an atom containing protons and neutrons
•
products –
the resulting substance(s) made from a chemical reaction
•
proton –
located in the nucleus, it is a positively charged particle with a mass of 1 amu
•
reactants –
those substances that interact in a chemical reaction to form new substances
•
valence electrons –
the electrons located in the outer most orbital of an atom that are
•
used (shared) in chemical reactions to bond elements
60 Possible checks
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15
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59
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72
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57
95
42
70
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12
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56
93
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68
26
43
11
18
55
92
40
67
25
42
10
17
54
90
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65
24
40
9
15
53
88
38
63
23
38
8
13
52
87
37
62
22
37
7
12
51
85
36
60
21
35
6
10
50
83
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58
20
33
5
8
49
82
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57
19
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4
7
48
80
33
55
18
30
3
5
47
78
32
53
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28
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46
77
31
52
16
27
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