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Nature of Science, Atomic Models and Atomic Structure Flashcards | StudBud
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Nature of Science, Atomic Models and Atomic Structure
Nature of Science, Atomic Models and Atomic Structure
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Questions
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Answers
1
Select the
parts
of an atom that contribute most to its
mass
.
neutrons
electrons & protons
protons & neutrons
protons
2
Select the one
benefit
of a Bohr model.
It was the first model proposed.
This model shows the exact number of protons, neutrons & electrons.
It represented the atom with negative charges floating in positive sphere.
It accurately illustrates electrons outside the nucleus in a "cloud."
3
Select the limitation of the Bohr (Planetary) model.
electrons do not travel in defined orbits
protons travel in the nucleus
atoms contain neutrons
the atom as a positive nucleus
4
the
neutral
particles found in atoms
electron
neutron
proton
5
What does the cloud in the electron cloud model represent?
the probability of an electron's location
the probability of a proton's location
the probability of a neutron's location
6
the
negatively
charged particles found in all atoms
proton
neutron
electron
7
an explanation of HOW or WHY
theory
law
hypothesis
8
How do scientific models change?
excellent guesswork
unconfirmed experiments
through both observation and experimentation
random observations
9
the
most current model
of the atom, in which the electrons form a cloud as they move around the nucleus
Electron Cloud
Bohr Model
Nuclear Model
Billiard Ball Model
10
a possible answer to a question that is TESTABLE
theory
hypothesis
law
11
the
positively
charged particles found in all atoms
neutron
proton
electron
12
What is the charge of the red particle (
#2
) in the model below?
negative (-)
positive (+)
neutral (0)
either positive (+) or neutral (0)
13
describes a pattern in nature; tells WHAT happens
hypothesis
theory
law
14
model of atomic structure
, in which electrons circulate around the nucleus in orbits with different
energy levels
Periodic Table of Elements
Punnett Square
Electron Cloud Model
Bohr Model (Planetary Model)
15
Electrons have a much
larger
mass than protons.
true
false
16
What was the first atomic model?
Planetary - like the Solar System
Plum Pudding
Billiard Ball - a Solid Sphere
Nuclear
17
What is the charge of the black particle (
#1
) in the model below?
neutral (0)
negative (-)
positive (+)
either positive (+) or neutral (0)
18
a substance made of two or more elements
chemically combined
in a specific ratio, or proportion
element
mixture
compound
19
often written as Math equations
law
hypothesis
theory
20
The number of protons is equal to the number of __________ in a neutral atom.
positrons
neutrons
electrons
