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Atomic Structure 2
Test Description: Atomic Structure Review
Instructions: Answer all questions to get your test result.
1) Each element in the periodic table ____________
A
contains hundreds of protons and neutrons per atom.
B
has a unique set of characteristics based on atomic number.
C
must be handled with great care or it will react with air.
D
combines with oxygen in endothermic reactions.
2) According to the periodic table, which group does Neon belong to?
A
17
B
9
C
10
D
19
3) Electrons randomly orbit the ________________ of an atom.
A
elements
B
protons and electrons
C
molecules
D
nucleus
4) Most of an atom's mass is concentrated in the
A
orbits.
B
ions.
C
electrons.
D
nucleus.
5) What is the electrical charge on a proton?
A
neutral
B
negative
C
ionic
D
positive
6) What is formed when an atom gives up an electron?
A
an ion
B
a compound
C
a water molecule
D
a new element
7) Which of the following cannot be seen by the naked eye?
A
mixtures
B
compounds
C
atoms
D
elements
8) What is the simplest type of a pure substance?
A
mixture
B
element
C
compound
D
colloid
9) The atomic weight of the atom is composed of the protons and neutrons in the
A
nucleus
B
orbits
C
outer energy level
D
innermost energy level
10) Which substance cannot be broken into smaller parts?
A
phosphorus
B
nitric acid
C
hydrogen peroxide
D
carbon dioxide
*select an answer for all questions
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