WorksheetsChemical Elements, Molecules, and Compounds
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What makes up an atom?
a)
electrons shells
b)
protons, neutrons, electrons
c)
oxygen, carbon, phosphorous
d)
highly dense particles
2.
What charge does a proton have?
a)
negative
b)
neutral
c)
no charge
d)
positive
3.
Define Atomic Number.
a)
# of protons within the nucleus of an atom
b)
total number of protons and neutrons in a nucleus
c)
# of neutrons an atom can carry
d)
always changing variable of an element
4.
Which part of an atom never changes?
a)
mass number
b)
atomic structure
c)
atomic number
d)
# of protons
5.
What is the effect of a change in the atomic nucleus?
a)
no change
b)
element become dismantled
c)
element can become an isotope or change completely
d)
element bonds with another element
6.
Which bond does a metal go through?
a)
ionic
b)
covalent
c)
polar
d)
nonpolar
7.
Define Half-Life.
a)
the amount of time it takes and element to double
b)
the amount of time taken for radioactivity of a specified isotope to fall to half of its original value.
c)
when an element is stable
d)
the amount of molecules in a bond
8.
What type of bond does nonmetals go through?
a)
nonpolar
b)
ionic
c)
covalent
d)
polar
9.
Which of the following are not equally shared in covalent bonds?
a)
protons
b)
neutrons
c)
electrons
d)
valence shells
10.
What is one reason why elements bond with each other?
a)
to create compounds
b)
to become more stable
c)
to form an isotope
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