The glowing of a neon light is cause by electrons emitting energy as they

move from higher to lower energy levels

Which accurately represents Dalton's Model of the atoms?

tiny, solid with predictable mass

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

Atoms contain subatomic particles

What does the electron cloud describe?

The most likely location of electrons in atoms

In an atomic model that includes a nucleus, positive charge is

concentrated in the center of an atom

Thompson's experiment provided evidence that an atom

contains negatively charged particles

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Physical Science Review #4

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Questions 17

Answers

1
The glowing of a neon light is cause by electrons emitting energy as they
collide with the nucleus
move from higher to lower energy levels
collide with other electrons
move from lower to higher energy levels
2
An atom has 15 protons and 16 neutrons what is it mass number
16
15
31
3
What is the maximum number of electrons an atomic orbital can have?
8
4
2
1
4
Which accurately represents Dalton's Model of the atoms?
hollow space with a dense nucleus
tiny, solid with predictable mass
tiny, solid shere with unpredictable mass
a sphere that is hollow throughout
5
Which of the following is NOT part of Dalton's theory?
All elements are composed of atoms
all atoms of the same element have the same mass
Atoms contain subatomic particles
6
An atom has 32 protons and 38 neutrons, what is the mass number
32
38
70
7
Which subatomic particle has a negative charge?
proton
alpha particle
electron
neutron
8
The number of protons in one atom of an element is that element's?
atomic number
isotope
balanced charge
mass number
9
What does the electron cloud describe?
The number of electrons in an atom
The most likely location of electrons in atoms
the precise location of electrons in atoms
The mass of the electrons in an atom
10
An atom has a mass number of 31 and has 16 neutrons. What is the atomic number?
16
31
15
11
What can you assume has happened if an electron moves to a higher energy level?
the atom has lost an electron
The atom becomes more stable
the electron has gained energy
The electron has lost energy
12
Which of the following is unique for any given element?
The number of neutrons
the charge on the lectrons
the mass of ta neutron
the number of protons
13
In an atomic model that includes a nucleus, positive charge is
concentrated at multiple sites in an atom
concentrated in the center of an atom
spread evenly throughout
located in the space outside the nucleus
14
Thompson's experiment provided evidence that an atom
has a negative charge
has a positive charge
is the smallest particle of matter
contains negatively charged particles
15
An atom has 15 protons and 16 neutrons . How many electrons does it have?
16
15
31
16
Which statement is true about oxygen-17 and oxygen-18?
They have an identical mass
They have the different number of protons
They are isotopes of oxygen
They have the same mass number
17
To find the number of neutrons in an atom, you would subtract
atomic number from mass number
mass number from atomic atomic number
isotope number from atomic number

Physical Science Review #4 Flashcards | StudBud