stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Physical Science Chapter 3 Flashcards | StudBud
Explore
/
Physical Science Chapter 3
Physical Science Chapter 3
31 terms
·
StudBud Administration
·
187 plays
#ohmygoss
Flashcards
31 cards
F
Practice quiz
P
Host live
L
Questions
31
Answers
1
a weighted average of the masses of all the naturally occurring isotopes
atomic number
atomic mass
mass number
unified atomic mass unit
2
the total number of particles found in the nucleus of a given element
unified atomic mass unit
mass number
atomic number
atomic mass
3
Christians should ignore the risk of radiation exposure and trust God to protect them.
True
False
4
represented by the letter u
atomic number
mass number
atomic mass
unified atomic mass unit
5
Rutherford's gold foil experiments gave rise to which atomic model?
the Saturnian model
the plum pudding model
the nuclear model
the quantum-mechanical model
6
Ions that have a negative charge are called __________. (short answer on test)
crazy atoms
cations
anions
negative protons
7
Democritus first called particles
atomos
, from which we get our word
atom.
False
True
8
Isotopes of an element always have the same number of protons.
True
False
9
What does The law of electrostatic charges state?
both are correct
none are correct
opposite electric charges attract each other.
like electric charges repel each other.
10
John Dalton would have disagreed with which statement?
Atoms can be divided into protons, neutrons, and electrons.
Atoms of an element are all alike.
Atoms cannot be created or destroyed in chemical reactions.
Elements are made only of atoms.
11
What is the currently accepted model of the atom?
the quantum-mechanical model
the nuclear model
the subatomic model
the Bohr model
12
An ion that has more protons than electrons is called a(n) __________. (short answer on test)
cation
crazy atom
anion
negative proton
13
Experiments involving __________ led to the discovery of the nucleus.
Crookes tubes and cathode rays
alpha particles and gold foil
the chemical reactions of gases
the emission spectrum
14
What is J. J. Thomson's atomic model called?
the quantum-mechanical model
the nuclear model
the Saturnian model
the plum pudding model
15
The Bohr model suggests that electrons move
only in distinct, spherical orbits at fixed distances from the nucleus.
in a flat ring around a massive, positively charged center.
randomly about the nucleus.
rapidly throughout a uniform, positively charged matrix.
16
A beam of __________ was directed at a piece of gold foil in Rutherford's experiments.
corpuscles
atoms
alpha particles
electrons
17
Potassium-39 and potassium-41 always have the same number of __________.
all the above
neutrons
protons
electrons
18
Democritus suggested that matter
was continuous.
existed in the form of very small, indivisible particles.
could be subdivided an unlimited number of times.
was made of hard spherical atoms surrounded by heat envelopes.
19
Which of the following is
not
an appropriate biblical motivation for managing radiation exposure?
demonstrating God's love and concern by helping prevent radiation exposure
loving my neighbor by alerting others to the hazards of radiation exposure
None of the above is an appropriate biblical motivation.
trusting God by ignoring the risk of radiation exposure
20
Quantum mechanics deals with the behavior of matter and energy at the atomic and subatomic levels.
True
False
21
which of the following scientists suggested that cathode rays were made of negatively charged particles?
Niels Bohr
J. Dalton
J. J. Thomson
Ernest Rutherford
22
The particle theory of matter's earliest record is from the __________.
Japenese
Greeks
Romans
Hebrews
23
the number of protons found in the nucleus of a given element
mass number
atomic number
atomic mass
unified atomic mass unit
24
Which is
not
a way that an ion can be formed?
An atom can lose a neutron.
An atom can gain extra electrons.
An atom can lose electrons.
All these ways can lead to ion formation.
25
Idea that opposite electrical charges attract & like electrical charges repel is known as the __________. (short answer)
law of static electricity
law of opposite charges
law of magnetism
law of electrostatic charges
26
The total number of particles in an atom's nucleus is indicated by the isotope's __________. (short answer on test)
proton number
atomic mass
atomic number
mass number
27
Which of the following is
not
a reason that the Bohr model is still in widespread use today?
It remains useful for showing how chemical bonding works.
represents energy levels that is easier to visualize than recent models.
It is fairly simple and easy to understand.
It is still the most workable model to date.
28
Copper-63 and copper-65 can never have the same number of __________.
neutrons
protons
electrons
all the above
29
Most of an atom consists of empty space.
True
False
30
Quantum mechanics is a branch of physics that deals with __________.
gravitational force and magnetic fields
laws of motion
matter and energy at atomic and subatomic levels
classical physics
31
The gold foil experiments led to the discovery of the __________. (short answer on test)
atom
gold
proton
nucleus
