Which chemical bonds arfounwithin water molecules?
A) hydrogen
B) ionic
C) covalent
D) inert
E) single
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Q24: How many protons arin thnucleus of a
Q25: Electrons arsharein bonds called
A)covalent bonds.
B)ionic bonds.
C)polar bonds.
D)nonpolar
Q26: Phosphorus has _ vacancies.
A)1
B)2
C)3
D)5
E)8
Q27: An atothat carries a chargis callea(n)
A)ion.
B)molecule.
C)compound.
D)element.
E)microelement.
Q28: Which of thfollowing statements is NOT true?
A)All
Q30: How many electrons arin thseconelectron shell of
Q31: An atom
A)is positively charged.
B)is negatively charged.
C)is electrically
Q32: How many electrons arin thoutermost electron shell
Q33: Radioactivisotopes have
A)excess electrons.
B)excess protons.
C)excess neutrons.
D)insufficient neutrons.
E)insufficient protons.
Q34: _ bonds holmolecules of DNA in their
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