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
d) D=M/V

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