Which of the following is NOT part of Dalton's atomic theory?

atoms contain subatomic particles

What does the electron cloud model describe?

The most likely locations of electrons in atoms

Rutherford's gold foil experiment provided evidence for which of the following:

there is a dense, positively charged mass in the center of an atom

Which of the following most accurately represents Dalton's model of the atom?

tiny, solid sphere with a predictable mass

Thomson's experiments provided evidence that an atom:

contains negatively charged particles

How was Bohr's atomic model similar to Rutherford's model?

it described a nucleus surrounded by a large volume of space

The glowing neon light is caused by electrons emitting energy as they:

move from higher to lower energy levels

According to Dalton's observations, when elements combine in a compound:

the ratio of their masses is always the same

Which statement about subatomic particles is NOT true?

Protons and neutrons have the same charge

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Physical Science Chapter 4 Review

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Answers

1
Which of the following is NOT part of Dalton's atomic theory?
all atoms of the same element have the same mass
all elements are composed of atoms
atoms contain subatomic particles
a compound contains atoms of more than one element
2
What do scientists use to predict the locations of electrons in atoms
probability
ratios and proportions
geometry
algebra
3
The Greek philosopher Democritus coined what word for the tiny indivisible parts of matter?
electron
atom
element
molecule
4
The number of protons in one atom of an element is that element's:
isotope
balanced charge
mass number
atomic number
5
Which of the following is unique for any given element?
the mass of a neutron
the number of neutrons
the number of protons
the charge on the electrons
6
In Rutherford's gold foil experiment, what caused some of the alpha particles to bounce back?
negative charges in the gold atoms
other alpha particles
nuclei in the gold atoms
electrons in the gold atoms
7
What does the electron cloud model describe?
The most likely locations of electrons in atoms
the precise locations of electrons in atoms
the number of electrons in an atom
the mass of electrons in an atom
8
Rutherford's gold foil experiment provided evidence for which of the following:
alpha particles have a positive charge
there is a dense, positively charged mass in the center of an atom
gold is not as dense as previously thought
negative and positive particles are spread evenly in an atom
9
Which of the following most accurately represents Dalton's model of the atom?
sphere that is hollow throughout
hollow sphere with a dense nucleus
tiny, solid sphere with an unpredictable mass
tiny, solid sphere with a predictable mass
10
Which statement is true about oxygen-17 and oxygen-18
They do not have the same number of protons
they have the same mass number
their atoms have identical masses
they are isotopes of oxygen
11
Thomson's experiments provided evidence that an atom:
has a positive charge
is the smallest particle of matter
has a negative charge
contains negatively charged particles
12
What can you assume has happened if an electron moves to a higher energy level?
the electron has lost energy
the atom has become more stable
the atom has lost an electron
the electron has gained energy
13
What description best describes Rutherford's model of the atom: The nucleus is similar to...
yolk in an egg
the pit in an avocado
fish in an aquarium
a marble in a stadium
14
To find the number of neutrons in an atom, you would subtract:
atomic number from electron number
mass number from atomic number
atomic number from mass number
isotope number from atomic number
15
How was Bohr's atomic model similar to Rutherford's model?
It assigned energy levels to electrons
it described a nucleus surrounded by a large volume of space
it described electron position in terms of electron clouds
it described how electrons gain and lose energy
16
The glowing neon light is caused by electrons emitting energy as they:
collide with other electrons
move from lower to higher energy levels
move from higher to lower energy levels
collide with the nucleus
17
According to Dalton's observations, when elements combine in a compound:
their volumes are always equal
their masses are always equal
each element contributes an equal number of atoms
the ratio of their masses is always the same
18
Which statement about subatomic particles is NOT true?
Protons and electrons have opposite charges
unlike protons and electrons, neutrons have no charge
Protons and neutrons have almost the same mass
Protons and neutrons have the same charge
19
In Bohr's model of the atom, electrons move:
like balls rolling down the hall
like popcorn in a popcorn popper
like planets orbiting the sun
like beach balls on water waves

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