(c) Isotope
(d) Stable element- How is the valence shell used?
(a) The valence shell is used in bonding together two stable atoms.
(b) The valence shell is used in bonding together two inorganic, stable atoms.
(c) The valence shell is used in bonding together two organic, stable atoms.
(d) The valence shell is used in bonding together two unstable atoms. - What process is used for two atoms to bond together?
(a) Hydrogen synthesis
(b) Ionic synthesis
(c) A chemical reaction
(d) Covalent synthesis - What is the difference between a molecule and a chemical compound?
(a) A molecule consists of two or more atoms of different chemical
elements. A chemical compound consists of two or more atoms of
the same chemical element.
(b) A molecule consists of only two atoms of the same chemical ele-
ments. A chemical compound consists of more than two atoms of
different chemical elements.
(c) A molecule consists of two or more atoms of the same chemical
element. A chemical compound consists of two or more atoms of
different chemical elements.
(d) A molecule consists of two or more atoms of organic chemical ele-
ment. A chemical compound consists of two or more atoms of inor-
ganic chemical elements. - What kind of bond shares electrons in the valence shell?
(a) Endergonic bond
(b) Covalent bond
(c) Hydrogen bond
(d) Ionic bond - What kind of reaction uses chemical energy to bond atoms together?
(a) Endergonic reaction
(b) Fusion reaction
(c) Fission reaction
(d) Exchange reaction
CHAPTER 2 Chemical Elements of Microorganisms^45