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LOLCS Phys Science Ch 3 Atom Flashcards | StudBud
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LOLCS Phys Science Ch 3 Atom
LOLCS Phys Science Ch 3 Atom
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Answers
1
the smallest subatomic particle is the _______
neutron
atom
proton
electron
2
Bohr model stated that electrons move in
a flat ring around a massive center
in several different orbitals around the nucleus
only in distinct orbits at a fixed distance around the nucleus
randomly around nucleus
3
Ions with a negative charge are called cations
True
False
4
Rutherford's gold foil experiments gave rise to what model?
Saturnian model
plum pudding model
quantum-mechanical model
nuclear model
5
how would you write the isotope notation for the following Fe-56?
5626Fe
23Fe56
2656Fe
56-FE-26
6
The law of electrostatic charges states what?
opposite charges attract each other
neither of these
both of these
like charges repel each other
7
The subatomic particle found in nucleus with 0 charge is...
electron
ion
proton
neutron
8
Lead-123 and Lead-125 have the same number of
protons
neutrons
electrons
ions
9
when there are differing numbers of neutrons it is called a cation
false
true
10
The subatomic particle with a +1e charge is the
proton
neutron
anion
electron
11
What does the 2- indicate in the sodium ion Na
2-
sodium gained 2 electrons so has positive 2 charge
sodium lost 2 protons so has negative 2 charge
sodium gained 2 protons so has positive 2 charge
sodium gained 2 electrons so has negative 2 charge
12
the Bohr model is the current accepted model of an atom
False
True
13
a positively or negatively charged atom is called a(n)
atomic
ion
atom
subatomic particle
14
An isotope of carbon has 6 protons & 8 neutrons has the name?
Carbon-13
Carbon-14
Cabon-11
Carbon-12
15
which of the following is a weighted average of all the naturally occurring isotopes of an element?
atomic number
none of these
mass number
atomic mass
16
Quantum mechanics is branch of physics that deals with
modern physics
laws of motion
gravitational forces & magnetics
matter & energy at atomic/subatomic levels
17
How many neutrons in the isotope
18
8
O
10
18
none of these
8
18
in an isotope like Phosphorus-31 and Phosphorus-33 they never have the same number of
protons
cations
neutrons
electrons
19
Democritus says that matter are tiny, indivisible particles
False
True
20
protons were difficult to discover because they have no electrical charge
True
False
21
what is it called when there are unequal numbers of protons and electrons?
electron
isotope
subatomic
ion
22
how many electrons in a neutral isotope
35
17
Cl
15
35
17
52
23
The discovery of ____________ demonstrated that atoms are indivisible
quarks
neutrons
protons
electrons
24
What represents a copper atom that has lost an electron?
Cu-12
cu-13
Cu-
Cu+
25
how many protons are there in the isotope
35
15
P
30
none of these
45
15
26
the quantity of this subatomic particle determines the atom's identity
protons
isotopes
neutrons
electrons
