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Physical Science Review 5.1
Test Description: Atoms, Bonding, and the Periodic Table
Instructions: Answer all questions to get your test result.
1) What are valence electrons?
A
the electrons that can be shared between nonmetals
B
all of the choices
C
the electrons that are held most loosely
D
the electrons that have the highest energy level
2) What is not a possible number of valence electrons?
A
5
B
1
C
7
D
9
3) How many valence electrons does boron have?
A
2
B
3
C
4
D
1
4) How many valence electrons does Barium have?
A
1
B
3
C
4
D
2
5) How many valence electrons does Bromine have?
A
8
B
5
C
6
D
7
6) Reactivity depends on
A
How easily an element gains or loses its valence electrons
B
Density
C
Atomic mass
D
Atomic number
7) Why are noble gases the least reactive?
A
they have 8 valence electrons
B
they don't like to gain electrons
C
they don't like to give away electrons
D
all of the choices
8) A chemical bond is not
A
the result of transferring electrons
B
the force of repulsion that holds 2 atoms together
C
the force of attraction that holds 2 atoms together
D
the result of sharing electrons
9) Helium is stable with
A
6 valence electrons
B
8 valence electrons
C
4 valence electrons
D
2 valence electrons
10) In ____________________________________ are drawn as dots
A
proton dot diagram, electrons
B
proton dot diagram, protons
C
electron dot diagram, electrons
D
electron dot diagram, protons
*select an answer for all questions
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