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chpt 17 properties of atoms and the periodic table Flashcards | StudBud
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chpt 17 properties of atoms and the periodic table
chpt 17 properties of atoms and the periodic table
25 terms
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learn about what an atom looks like and how the elements are arranged on the periodic table
Flashcards
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Questions
25
Answers
1
the particles that move about the nucleus and have a negative charge are
electrons
protons
atoms
neutrons
2
The man who is given credit for constructing the table of periodic elements is?
Neils Bohr
Henry Moseley
Dmitri Mendeleev
James Watson
3
Vertical columns of the elements are called groups.
false
true
4
The central core of an atom is called what?
nucleotide
core
nucleus
central point
5
The number of electrons in energy level n is?
32
8
18
2
6
The symbol of Chlorine is?
Cu
CL
Cl
C
7
How many electrons are in the K energy level
8
2
32
18
8
The same elements exist all over the universe.
true
false
9
Protons and electrons are located in the nucleus.
true
false
10
The Bohr Model is the current accepted model of the atom, a nucleus with an electron cloud
false
true
11
The horizontal rows of an element are called periods.
false
true
12
The Thomson model of the atom was a nucleus embedded with electrons, like chocolate chip dough
false
true
13
If Boron has an atomic number of 5 and an atomic mass of 11, how many neutrons does it have?
0
6
11
5
14
The chemical symbol for Mercury is
Hm
Mg
Mr
Hg
15
A total count of the neutrons and protons in an atom is the
core
mass number
nucleus
atomic number
16
A certain atom has 26 protons, 26 electrons and 30 neutrons. What is the mass number?
56
30
52
26
17
If Copper has an atomic number of 29 and has 35 neutrons, what is it's atomic mass number?
64
29
63
35
18
The identity of an element is determined by the number of
letters
electrons
neutrons
protons
19
When elements have different numbers of protons and neutrons they are called
radioactive
isotopes
electrons
mistakes
20
The region around the nucleus occupied by electrons is called
energy level
cloud
idk
electron path
21
The mass of a proton is measured in what units?
bcu
amu
amt
amg
22
How many energy levels does an atom have?
6
7
8
4
23
A capital letter or capital letter/lower case letter is used to represent an element is the
chemical symbol
identity
name
atomic number
24
What does amu stand for?
atoms mass unit
automatic unit
atomic mass unit
american mass unit
25
Elements are classified as
nonmetals
nobel gases
metalloids
metals
