CHEMISTRY PREASSESSMENT
(ANSWERS) SOLVED CORRECTLY TO
PASS!!
1 of 75
Term
What is an atom's nucleus made of?
protons and neutrons
only protons
only neutrons
anodes
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, d. electron arrangement a. protons and neutrons
d. Atoms are rearranged. b. loses three electrons
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2 of 75
Term
Most halogens form compounds by
a.gaining an electron to form a negative ion
b. losing an electron to form a positive ion
c. losing protons
d. joining with both calcium and carbon
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a.gaining an electron to b. stored in the form of
form a negative ion chemical bonds
d. Atoms are rearranged. d. losing or gaining electrons
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3 of 75
Term
, Transition metals such as copper or tungsten form
compounds by
a.gaining electrons to form negative ions
b. losing electrons to form positive ions
c. losing neutrons
d. changing shape and color
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b. losing electrons to
d. the atom gains or loses energy. form
positive ions
b. protons plus the
b. loses three electrons number of neutrons.
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4 of 75
Term
Two different isotopes of an element have different
a. numbers of neutrons.
b. numbers of protons.
c. atomic numbers.
d. numbers of electrons.
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a. number of neutrons d. electron arrangement
, a.valence a. smaller surface area
electrons
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5 of 75
Term
Elements that have one valence electron tend to
a. be highly reactive
b. form ions
c. become charged
d. All of the above
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a. valence electrons d. All of the above
a.covalent bonds d. mass of the products
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6 of 75
Term
A subatomic particle that has a negative charge is called
a(n)
a. molecule
b. electron
(ANSWERS) SOLVED CORRECTLY TO
PASS!!
1 of 75
Term
What is an atom's nucleus made of?
protons and neutrons
only protons
only neutrons
anodes
Give this one a try later!
, d. electron arrangement a. protons and neutrons
d. Atoms are rearranged. b. loses three electrons
Don't know?
2 of 75
Term
Most halogens form compounds by
a.gaining an electron to form a negative ion
b. losing an electron to form a positive ion
c. losing protons
d. joining with both calcium and carbon
Give this one a try later!
a.gaining an electron to b. stored in the form of
form a negative ion chemical bonds
d. Atoms are rearranged. d. losing or gaining electrons
Don't know?
3 of 75
Term
, Transition metals such as copper or tungsten form
compounds by
a.gaining electrons to form negative ions
b. losing electrons to form positive ions
c. losing neutrons
d. changing shape and color
Give this one a try later!
b. losing electrons to
d. the atom gains or loses energy. form
positive ions
b. protons plus the
b. loses three electrons number of neutrons.
Don't know?
4 of 75
Term
Two different isotopes of an element have different
a. numbers of neutrons.
b. numbers of protons.
c. atomic numbers.
d. numbers of electrons.
Give this one a try later!
a. number of neutrons d. electron arrangement
, a.valence a. smaller surface area
electrons
Don't know?
5 of 75
Term
Elements that have one valence electron tend to
a. be highly reactive
b. form ions
c. become charged
d. All of the above
Give this one a try later!
a. valence electrons d. All of the above
a.covalent bonds d. mass of the products
Don't know?
6 of 75
Term
A subatomic particle that has a negative charge is called
a(n)
a. molecule
b. electron
