9 Week Review Question Preview (ID: 15986)
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how many valence electrons can the first shell hold?
a) 5
b) 8
c) 18
d) 2
where do you find electons?
a) in a storm cloud
b) In the electron cloud
c) in a tree
d) in a phone
what kind of charge do electrons have?
a) posistive
b) negative
c) no charge
d) electron cloud
what is density?
a) Is the mass per unit volume of a substance
b) its the height
c) its the length
d) its the volume
how many valence electrons are in helium
a) 5
b) 8
c) 2
d) 9
how many valence electrons can the second shell hold?
a) 2
b) 8
c) 18
d) 34
what kind of charge do a proton have?
a) positive
b) negative
c) nuetral
d) electron
what kind charge do neutrons have?
a) positive
b) nucleus
c) negative
d) no charge
what subatomic particles are found in the nucleus
a) protons and electrons
b) protons and neutrons
c) electron and neutrons
d) electrons and electron cloud
what is the formula for density?
a) H+H2O
b) H2O + O2
c) PEMDAS
d) D=M/V
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