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Atoms and the Periodic Table Flashcards | StudBud
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Atoms and the Periodic Table
Atoms and the Periodic Table
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1
Which statement about an electron cloud is most accurate?
It is an area around the nucleus where electrons are found
Electrons cause rain
It is located inside the nucleus of an atom
It is a circle around the nucleus
2
Why is Uranium used in nuclear weapons?
It is a metal
It is unstable and radioactive
Its atomic number is 92
It is awesome
3
Which of the following equations is balanced?
H2 + O2 = 2H2O
2Na + Cl2 = 2 NaCl
NaHCO3 + H2O = NaCH3 + 4 O2
2C + 2O2 = 4 CO2
4
What is the most accurate descriptions of an isotope?
atoms with the same # of protons and different # of electron
atoms with the same # of protons and electrons
atoms with the same # of protons and neutrons
atoms with the same # of protons and different # of neutrons
5
What is special about the Nobel Gases?
They are kings and queens
They will not bond because of a full outer energy level.
They are highly reactive
They were easily disocovered
6
In which type of bond would an electron be transferred?
Metallica
Ionic
Covalent
Metallic
7
Two or more elements bonded together creates a.....?
liquid
compound
gas
solid
8
How many bonds can this atom form?
2
4
6
1
9
Which part of John Dalton's atomic theory was proven INCORRECT?
Atoms cannot be divided
Atoms of 1 element are different from atoms of another
Atoms combined with each other to form new substances
All matter is made of atoms
10
What information does an atomic number represent?
the number of protons + neutrons
the number or protons
the mass of one atom
the number of atoms
11
What happens when an atoms loses one or more electrons?
becomes neutral
becomes a positive ion
it becomes an isotope
becomes a negative ion
12
What is the electrical charge of a proton?
negative
positive
neutron
neutral
13
How many neutrons are in Manganese (Mn) atomic # 25?
25
55
4
30
14
How do you calculate atomic mass?
neutrons + electrons
neutrons + protons
neutrons - protons
protons + electrons
15
What does "atomos" mean?
almost like an atom
atom
smallest particle of matter
not able to be divided
16
Assuming this atom is neutral, which element is this?
Beryllium
Silicon
Helium
Carbon
17
If the mass of a proton was compared to a bowling ball, what would the mass of an electron be?
a smaller bowling ball
an electron cloud
molecules
a penny
18
How many valence electrons does sodium (Na) have?
23
1
11
3
19
What is the atomic symbol of the element in period 5 group 11 of the periodic table?
Rg
Silver
Ag
Gold
20
What is a row on the periodic table called?
row
period
column
group
21
Flourine is in group 17 on the Periodic table, which element is most like Flourine?
Oxygen
Chlorine
Neon
Nitrogen
22
Dimitri Mendeleev organized the elements by
shape
density
melting point
increasing atomic mass
23
What particle did good ole' J.J. Thomson discover?
Electron Cloud
Neutron
Electron
Proton
24
Who created the idea of atoms?
Democritus
John Dalton
Leonardo Da Vinci
Dimitri Mendeleev
25
Most elements on Earth are....?
non-metal
metal
pure
metalloid
26
What is the most important factor in determining how an atom will bond?
period
# of neutrons
# of protons
# of valence electrons
