ALEKS QUESTIONS WITH CORRECT ANSWERS
◉ Electrons.
Answer: The negatively charged particle in an atom; circles around
the nucleus in the electron cloud
◉ Proton.
Answer: The positively charged particle in an atom; located in the
nucleus; determine the element
◉ Neutron.
Answer: The neutral particle in an atom; it has no charge and is
located in the nucleus
◉ Plum Pudding Model.
Answer: A model of the atom that depicts a sphere of positive charge
with electrons scattered throughout
◉ Ernest Rutherford.
Answer: Conducted an experiment in which he shot alpha particles
at gold foil; roved there was a small, dense nucleus with a positive
charge and that protons are positive
,◉ Metals.
Answer: Elements located on the left side of the periodic table that
want to lose electrons
◉ Characteristics of Metals.
Answer: - Malleable
- Ductile
- Conductive
- Lustrous
◉ Malleable.
Answer: The ability to be molded into shapes
◉ Ductile.
Answer: The ability to be pulled into wire
◉ Conductive.
Answer: The ability to allow heat or electricity to pass through an
object
◉ Lustrous.
Answer: The ability to be shiny
,◉ Nonmetals.
Answer: Elements located on the right side of the periodic table that
want to gain electrons
◉ Metalloids.
Answer: Elements placed in a stair-step line between metals and
nonmetals; they have characteristics of both
◉ Diatomic Molecules.
Answer: Elements that occur in pairs in their natural state;
hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine
◉ Electronegativity.
Answer: The ability of a molecule to attract electrons to it; increases
as you move left to right in the table and decreases as you move top
to bottom; fluorine is the hardest
◉ Atomic Radius.
Answer: The radius of an atom; decreases as you move left to right
and increases as you move top to bottom
◉ Ionization Energy.
, Answer: The energy needed to rip off an electron; increases as you
move left to right and decreases as you move top to bottom
◉ Ion.
Answer: An atom that has gained or lost electrons
◉ Anion.
Answer: An atom that gains electrons and has a negative charge;
nonmetals
◉ Cation.
Answer: An atom that looses electrons and has a positive charge;
metals
◉ Isotope.
Answer: An atom that has changed its number of neutrons
◉ Atomic Number.
Answer: A unique number to each element that tells the number of
protons and the number of electrons if the atom is neutral
◉ Atomic Mass.
◉ Electrons.
Answer: The negatively charged particle in an atom; circles around
the nucleus in the electron cloud
◉ Proton.
Answer: The positively charged particle in an atom; located in the
nucleus; determine the element
◉ Neutron.
Answer: The neutral particle in an atom; it has no charge and is
located in the nucleus
◉ Plum Pudding Model.
Answer: A model of the atom that depicts a sphere of positive charge
with electrons scattered throughout
◉ Ernest Rutherford.
Answer: Conducted an experiment in which he shot alpha particles
at gold foil; roved there was a small, dense nucleus with a positive
charge and that protons are positive
,◉ Metals.
Answer: Elements located on the left side of the periodic table that
want to lose electrons
◉ Characteristics of Metals.
Answer: - Malleable
- Ductile
- Conductive
- Lustrous
◉ Malleable.
Answer: The ability to be molded into shapes
◉ Ductile.
Answer: The ability to be pulled into wire
◉ Conductive.
Answer: The ability to allow heat or electricity to pass through an
object
◉ Lustrous.
Answer: The ability to be shiny
,◉ Nonmetals.
Answer: Elements located on the right side of the periodic table that
want to gain electrons
◉ Metalloids.
Answer: Elements placed in a stair-step line between metals and
nonmetals; they have characteristics of both
◉ Diatomic Molecules.
Answer: Elements that occur in pairs in their natural state;
hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, iodine
◉ Electronegativity.
Answer: The ability of a molecule to attract electrons to it; increases
as you move left to right in the table and decreases as you move top
to bottom; fluorine is the hardest
◉ Atomic Radius.
Answer: The radius of an atom; decreases as you move left to right
and increases as you move top to bottom
◉ Ionization Energy.
, Answer: The energy needed to rip off an electron; increases as you
move left to right and decreases as you move top to bottom
◉ Ion.
Answer: An atom that has gained or lost electrons
◉ Anion.
Answer: An atom that gains electrons and has a negative charge;
nonmetals
◉ Cation.
Answer: An atom that looses electrons and has a positive charge;
metals
◉ Isotope.
Answer: An atom that has changed its number of neutrons
◉ Atomic Number.
Answer: A unique number to each element that tells the number of
protons and the number of electrons if the atom is neutral
◉ Atomic Mass.
