SCMH 1010 EXAM 2 STEPHEN ADAMS
QUESTIONS AND ANSWERS GRADED A+
2026
Structure of the atom - ANS made up of a small dense ball called the nucleus where most of
the mass is of the atom is located; containing protons and neutrons. circled by negatively
charged particles called electrons.
electron shells - ANS the outside part of an atom around the atomic nucleus. It is a group of
atomic orbitals.
valence shell - ANS the valence shell is the outer most shell surrounding an atom. the
number of electrons in an atoms valence shell can vary.
what are the 4 types of chemical bonds - ANS covalent
metallic
ionic
hydrogen
covalent bonds: - ANS forms when a hydrogen atom shades an electron with other atoms.
metallic bonds: - ANS occur between two metal atoms. they are sharing electrons, but the
electrons are flowing around from atom to atom unlike covalent bonds.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, ionic bonds: - ANS occurs between a metal and a nonmetal. the metal is positively charged
while the nonmetal is negatively charged.
hydrogen bonds - ANS occurs between two covalent bonds. (the covalent bond occurs within
the molecule, while hydrogen bonds occur BETWEEN the two covalently bonded atoms).
strongest type of bond.
the strong force - ANS attractive force that acts between protons and neutrons in an atomic
nucleus. helps keep them together, but only is efficient one very small distances. acts in the
nucleus to over come Coulomb repulsion. holds the nucleus together
two types of nuclear decay: - ANS alpha decay
beta decay
when atoms eject protons they become ________, which is called ________. - ANS different
elements.
nuclear decay
what is nuclear decay?? - ANS `when an element decays into another element.
alpha decay: - ANS occurs when the nucleus ejects two protons and two neutrons. it
becomes an element with an atomic number of exactly TWO less.
beta decay: - ANS occurs when one of the neutrons turns into a proton and ejects an electron
and another particle called a neutrino.So, you're still becoming another element because you
are chaining your atomic number. Atomic number is the number of protons. So, if your atomic
number is 94, and it undergoes bets decay, your new atomic number is 95. Therefore, it is a
different element.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
QUESTIONS AND ANSWERS GRADED A+
2026
Structure of the atom - ANS made up of a small dense ball called the nucleus where most of
the mass is of the atom is located; containing protons and neutrons. circled by negatively
charged particles called electrons.
electron shells - ANS the outside part of an atom around the atomic nucleus. It is a group of
atomic orbitals.
valence shell - ANS the valence shell is the outer most shell surrounding an atom. the
number of electrons in an atoms valence shell can vary.
what are the 4 types of chemical bonds - ANS covalent
metallic
ionic
hydrogen
covalent bonds: - ANS forms when a hydrogen atom shades an electron with other atoms.
metallic bonds: - ANS occur between two metal atoms. they are sharing electrons, but the
electrons are flowing around from atom to atom unlike covalent bonds.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, ionic bonds: - ANS occurs between a metal and a nonmetal. the metal is positively charged
while the nonmetal is negatively charged.
hydrogen bonds - ANS occurs between two covalent bonds. (the covalent bond occurs within
the molecule, while hydrogen bonds occur BETWEEN the two covalently bonded atoms).
strongest type of bond.
the strong force - ANS attractive force that acts between protons and neutrons in an atomic
nucleus. helps keep them together, but only is efficient one very small distances. acts in the
nucleus to over come Coulomb repulsion. holds the nucleus together
two types of nuclear decay: - ANS alpha decay
beta decay
when atoms eject protons they become ________, which is called ________. - ANS different
elements.
nuclear decay
what is nuclear decay?? - ANS `when an element decays into another element.
alpha decay: - ANS occurs when the nucleus ejects two protons and two neutrons. it
becomes an element with an atomic number of exactly TWO less.
beta decay: - ANS occurs when one of the neutrons turns into a proton and ejects an electron
and another particle called a neutrino.So, you're still becoming another element because you
are chaining your atomic number. Atomic number is the number of protons. So, if your atomic
number is 94, and it undergoes bets decay, your new atomic number is 95. Therefore, it is a
different element.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
