The octet rule is applied to bonding in carbon containing compounds.
a) in accordance with the octet rule, each bonded carbon atom forms eight bonds.
b) all carbon containing compounds contain at least eight bonds.
c) each bonded carbon atom shares electrons so that it has exactly eight outer valence electrons.
d) the number of atoms in any carbon containing compound is a multiple of eight.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.

An element x has two isotopes. x–15 has 7 protons and 8 neutrons. determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus.