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Atomic Structure
Test Description: Parts of the Atom
Instructions: Answer all questions to get your test result.
1) Positively charged particle
A
neutron
B
electron
C
ion
D
proton
2) Particle with no charge
A
isotope
B
neutron
C
proton
D
electron
3) The center or core of the atom
A
neutrons
B
atomic mass
C
electron cloud
D
nucleus
4) Negatively charged particles
A
isotopes
B
protons
C
electrons
D
neutrons
5) Particles found in the nucleus
A
neutrons and electrons
B
protons and neutrons
C
protons and electrons
D
protons only
6) Where are the electrons located?
A
inside the nucleus in orbitals
B
inside the neutrons in the nucleus
C
outside the nucleus in specific shells
D
both inside and outside the nucleus
7) The smallest of the subatomic particles
A
neutrons
B
protons and neutrons
C
electrons
D
protons
8) What is the atomic number?
A
the number of protons in an atom
B
the number of neutrons in an atom
C
the total of all 3 subatomic particles
D
the total number of protons and neutrons
9) What information does the atomic mass or mass number give us?
A
the number of protons
B
the number of protons and neutrons
C
the number of electrons
D
the total number of all 3 particles
10) Which of the following will best help us determine the number of electrons?
A
atomic number
B
the mass number
C
the number of neutrons
D
the element symbol
11) What are the smallest particles or building blocks of matter?
A
atoms
B
elements
C
compounds
D
molecules
12) What are pure substances that cannot be broken down in simpler substances by chemical means?
A
elements
B
compounds
C
mixtures
D
molecules
13) Greek philosopher who used the term atomos
A
Dalton
B
Chadwick
C
Thomson
D
Democritus
14) Scientist who discovered the proton and the nucleus.
A
Chadwick
B
Thomson
C
Rutherford
D
Bohr
15) Scientist who identified the electron
A
Bohr
B
Dalton
C
Thomson
D
Democritus
16) Scientist who determined that electrons circle in specific layers or shells.
A
Bohr
B
Thomson
C
Chadwick
D
Rutherford
17) Scientist who discovered the neutron
A
Dalton
B
Rutherford
C
Democritus
D
Chadwick
*select an answer for all questions
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