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