Physical Science Review 5.1: Question Preview (ID: 14759)

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What are valence electrons?
a) the electrons that have the highest energy level
b) the electrons that are held most loosely
c) the electrons that can be shared between nonmetals
d) all of the choices

What is not a possible number of valence electrons?
a) 9
b) 7
c) 5
d) 1

How many valence electrons does boron have?
a) 1
b) 2
c) 3
d) 4

How many valence electrons does Barium have?
a) 2
b) 1
c) 3
d) 4

How many valence electrons does Bromine have?
a) 7
b) 8
c) 6
d) 5

Reactivity depends on
a) How easily an element gains or loses its valence electrons
b) Density
c) Atomic number
d) Atomic mass

Why are noble gases the least reactive?
a) they have 8 valence electrons
b) they don't like to give away electrons
c) they don't like to gain electrons
d) all of the choices

A chemical bond is not
a) the force of attraction that holds 2 atoms together
b) the result of sharing electrons
c) the result of transferring electrons
d) the force of repulsion that holds 2 atoms together

Helium is stable with
a) 2 valence electrons
b) 4 valence electrons
c) 6 valence electrons
d) 8 valence electrons

In ____________________________________ are drawn as dots
a) electron dot diagram, electrons
b) electron dot diagram, protons
c) proton dot diagram, protons
d) proton dot diagram, electrons

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