SCMH 1010 EXAM 2 STEPHEN ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
Structure of the atom - (ANSWER)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 - (ANSWER)the outside part of an atom around the atomic nucleus. It is a group of atomic
orbitals.
valence shell - (ANSWER)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 - (ANSWER)covalent
metallic
ionic
hydrogen
covalent bonds: - (ANSWER)forms when a hydrogen atom shades an electron with other atoms.
metallic bonds: - (ANSWER)occur between two metal atoms. they are sharing electrons, but the
electrons are flowing around from atom to atom unlike covalent bonds.
ionic bonds: - (ANSWER)occurs between a metal and a nonmetal. the metal is positively charged while
the nonmetal is negatively charged.
hydrogen bonds - (ANSWER)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 - (ANSWER)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
, SCMH 1010 EXAM 2 STEPHEN ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
two types of nuclear decay: - (ANSWER)alpha decay
beta decay
when atoms eject protons they become ________, which is called ________. - (ANSWER)different
elements.
nuclear decay
what is nuclear decay?? - (ANSWER)`when an element decays into another element.
alpha decay: - (ANSWER)occurs when the nucleus ejects two protons and two neutrons. it becomes an
element with an atomic number of exactly TWO less.
beta decay: - (ANSWER)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.
gamma decay, or Gamma Radiation: - (ANSWER)the production of a high energy photon which is a
gamma ray that is in the extreme high frequency range of your electromagnetic spectrum. They are
extremely energetic.
Something has kicked up to a higher energy level and falls back down, producing photon.
what are the 2 types of nuclear reactions: - (ANSWER)fusion and fission
fusion: - (ANSWER)when elements are slammed together so hard, they become one element.
ex: hydrogen and hydrogen are slammed so hard together on the suns surface they become helium.
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
Structure of the atom - (ANSWER)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 - (ANSWER)the outside part of an atom around the atomic nucleus. It is a group of atomic
orbitals.
valence shell - (ANSWER)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 - (ANSWER)covalent
metallic
ionic
hydrogen
covalent bonds: - (ANSWER)forms when a hydrogen atom shades an electron with other atoms.
metallic bonds: - (ANSWER)occur between two metal atoms. they are sharing electrons, but the
electrons are flowing around from atom to atom unlike covalent bonds.
ionic bonds: - (ANSWER)occurs between a metal and a nonmetal. the metal is positively charged while
the nonmetal is negatively charged.
hydrogen bonds - (ANSWER)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 - (ANSWER)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
, SCMH 1010 EXAM 2 STEPHEN ADAMS QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
two types of nuclear decay: - (ANSWER)alpha decay
beta decay
when atoms eject protons they become ________, which is called ________. - (ANSWER)different
elements.
nuclear decay
what is nuclear decay?? - (ANSWER)`when an element decays into another element.
alpha decay: - (ANSWER)occurs when the nucleus ejects two protons and two neutrons. it becomes an
element with an atomic number of exactly TWO less.
beta decay: - (ANSWER)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.
gamma decay, or Gamma Radiation: - (ANSWER)the production of a high energy photon which is a
gamma ray that is in the extreme high frequency range of your electromagnetic spectrum. They are
extremely energetic.
Something has kicked up to a higher energy level and falls back down, producing photon.
what are the 2 types of nuclear reactions: - (ANSWER)fusion and fission
fusion: - (ANSWER)when elements are slammed together so hard, they become one element.
ex: hydrogen and hydrogen are slammed so hard together on the suns surface they become helium.
