If an element has 11 protons, what is also 11 in this atom?

the atomic number and the amount of electrons

J.J. Thomson's experiments provided evidence that an atom...

contains negatively charged particles

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

atoms contain subatomic particles

In an atomic model that contains a nucleus, positive charge is...

concentrated in the center of an atom

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Atomic Structure Review #2 16-17

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This is an Atomic Structure Review for an 10th grade chemistry class.

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Questions 13

Answers

1
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 of the electrons
2
If an element has 11 protons, what is also 11 in this atom?
the atomic number and the amount of electrons
the atomic mass and electrons
the amount of energy levels and electrons
the number of neutrons and the atomic mass
3
J.J. Thomson's experiments provided evidence that an atom...
contains negatively charged particles
has a positive charge
is the smallest particle of matter
has a negative charge
4
Which scientist discovered compounds are formed by joining two or more elements?
Thomson
Bohr
Democritus
Dalton
5
Which of the following is NOT part of John Dalton's atomic theory?
a compound contains atoms of more than one element
all elements are composed of atoms
all atoms of the same element have the same mass
atoms contain subatomic particles
6
If an atom has 32 protons and 38 neutrons, what is its mass number?
6
70
38
32
7
The nucleus of an atom is made up of...
protons, neutrons, and electrons
protons and neutrons
protons and electrons
electrons and neutrons
8
This scientist discovered the nucleus.
Thomson
Garfield
Dalton
Rutherford
9
In an atomic model that contains a nucleus, positive charge is...
located in the space outside the nucleus
spread evenly throughout an atom
concentrated in the center of an atom
concentrated at multiple sites in an atom
10
To find the number of neutrons in an atom, you would subtract...
atomic number from electron number
mass number from atomic number
isotope number from atomic number
atomic number from mass number
11
Whose atomic model is shown below?
None of these choices
Rutherford
Thomson
Bohr
12
This is the name of a positively charged sub-atomic particle.
neutron
electron
proton
positron
13
Which statement is true about oxygen-17 and oxygen-18?
they are isotopes of oxygen
their atoms have identical mass
they do not have the same number of protons
they have the same mass number

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