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Atomic Structure Flashcards | StudBud
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Atomic Structure
Atomic Structure
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Answers
1
the electron has a ___ charge
neutral
negative
positive
2
The electrons determine the
chemical properties of the atom
mass of the atom
stability of the atom
strength of the atom
3
Matter can neither be created nor destroyed
law of conservation of mass
science
thermal conductivity
Dalton's atomic theory
4
The mass of the electron is
0.5 amu
negligible
1 amu
3 amu
5
The neutron has a mass of
negligible
1 amu
0.5 amu
2 amu
6
There are ____ subatomic particles
2
4
1
3
7
Atomic fission shows one limitation of
physical theory
atoms and elements
Dalton's atomic theory
chemical properties
8
The smallest particle that all matter is made up of
an atom
an element
a molecule
a compound
9
The charge of the proton is
can not be determined
positive
negative
neutral
10
Aluminum has 13 electrons and 13 protons. if it looses 3 electrons, it will have a charge of
13
+2
+3
+1
11
the arrangement of electrons on various shells of an atom
electronic configuration
valency
atomic weight
isotopes
12
The atomic number of an element is the
number of protons
mass number
number of electrons
number of neutrons
13
the number of protons in an atom indicates the
atomic number
charge
the mass number
the valency
14
chlorine has 17 electrons, 17 protons and 18 neutrons. the atomic number of chlorine is
12
21
18
17
15
the number of electrons on the last shell of an atom are called
isotope elctrons
single elctron
valence electrons
double electrons
16
____ contributes to the stability of an atom
electrons
neutron
atomic shells
proton
17
Sodium has 11 electrons, 11 protons and 12 neutrons. Its overall charge is
0
11
1
13
18
a change that produces a new substance
chemical change
physical
homogeneous change
solubility
19
Sodium has 11 electrons, 11 protons and 12 neutrons. its mass number is
22.98
11
23
22
20
The number of protons + neutrons =
atomic number
mass number
electronic stability
isotope
21
chlorine has 17 electrons, 17 protons and 18 neutrons. the mass number of chlorine is
40
35
36
34.89
22
two atoms with the same number of protons but different number of neutrons
ions
positrons
isotopes
energy level
23
chlorine has 17 electrons, 17 protons and 18 neutrons. if the overall charge of chlorine is
-6
0
18
17
24
Helium gas has 2 electrons, 2 protons and 2 neutrons. its atomic number is
3
2
1
4
25
Helium gas has 2 electrons, 2 protons and 2 neutrons. its mass number is
1
6
2
4
26
Electrons are found on the ____ of an atom
nucleus
shells
27
baking a cake is a
heterogeneous
physical
chemical process
homogeneous
28
One application of atomic fission
medical industry
nuclear power plant
food industry
school laboratory
29
Aluminum has 13 electrons and 13 protons. its overall charge is
6
0
-2
+4
30
Atomic fission refers to
property of an atom
change of state
splitting of atomic nuclei
joining of atoms
31
The proton is found in the shells or orbitals of an atom
false
true
