ALEKS MATH PLACEMENT EXAM REVIEW
2026 FINAL PAPER COMPLETE QUESTIONS
AND ANSWERS.
⫸ Atoms. Ans: Basic unit of matter which cannot be broken down
and contain mostly empty space; contains three parts: the electron,
proton, and neutron
⫸ Elements. Ans: A pure substance that contains only one type of
atom
⫸ Compound. Ans: Two or more elements that are chemically
bonded; includes ionic and covalent
⫸ Mixture. Ans: Two or more substances that are together but not
bonded
⫸ Pure Substance. Ans: Substance that contains only one kind of
compound
⫸ Bose-Einstein Condensate. Ans: The state of matter with the
lowest energy; basically a very cold solid
⫸ Solid. Ans: A state of matter with strong bonds
,⫸ Liquid. Ans: A state of matter with weak bonds
⫸ Gas. Ans: A state of matter with no bonds
⫸ Plasma. Ans: The state of matter with the highest energy; it uses
ionization instead of bonds
⫸ Robert Boyle. Ans: First to define an element; any substance is a
substance unless it can be broken down
⫸ John Dalton. Ans: Used and combined previous ideas to discuss
the atom; elements are made of atoms; all atoms of an element are
identical; atoms of different elements are different; law of constant
composition; atoms are invisible
⫸ Law of Constant Composition. Ans: Atoms of one element can
combine with other elements to form compounds; a given compound
always has the same relative numbers and types of atoms
⫸ J.J. Thomson. Ans: Discovered electrons and protons and
developed the plum pudding model of an atom
⫸ Electrons. Ans: The negatively charged particle in an atom; circles
around the nucleus in the electron cloud
,⫸ Proton. Ans: The positively charged particle in an atom; located in
the nucleus; determine the element
⫸ Neutron. Ans: The neutral particle in an atom; it has no charge and
is located in the nucleus
⫸ Plum Pudding Model. Ans: A model of the atom that depicts a
sphere of positive charge with electrons scattered throughout
⫸ Ernest Rutherford. Ans: 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. Ans: Elements located on the left side of the periodic table
that want to lose electrons
⫸ Characteristics of Metals. Ans: - Malleable
- Ductile
- Conductive
- Lustrous
⫸ Malleable. Ans: The ability to be molded into shapes
⫸ Ductile. Ans: The ability to be pulled into wire
, ⫸ Conductive. Ans: The ability to allow heat or electricity to pass
through an object
⫸ Lustrous. Ans: The ability to be shiny
⫸ Nonmetals. Ans: Elements located on the right side of the periodic
table that want to gain electrons
⫸ Metalloids. Ans: Elements placed in a stair-step line between
metals and nonmetals; they have characteristics of both
⫸ Diatomic Molecules. Ans: Elements that occur in pairs in their
natural state; hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine,
iodine
⫸ Electronegativity. Ans: 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. Ans: The radius of an atom; decreases as you
move left to right and increases as you move top to bottom
⫸ Ionization Energy. Ans: The energy needed to rip off an electron;
increases as you move left to right and decreases as you move top to
bottom
2026 FINAL PAPER COMPLETE QUESTIONS
AND ANSWERS.
⫸ Atoms. Ans: Basic unit of matter which cannot be broken down
and contain mostly empty space; contains three parts: the electron,
proton, and neutron
⫸ Elements. Ans: A pure substance that contains only one type of
atom
⫸ Compound. Ans: Two or more elements that are chemically
bonded; includes ionic and covalent
⫸ Mixture. Ans: Two or more substances that are together but not
bonded
⫸ Pure Substance. Ans: Substance that contains only one kind of
compound
⫸ Bose-Einstein Condensate. Ans: The state of matter with the
lowest energy; basically a very cold solid
⫸ Solid. Ans: A state of matter with strong bonds
,⫸ Liquid. Ans: A state of matter with weak bonds
⫸ Gas. Ans: A state of matter with no bonds
⫸ Plasma. Ans: The state of matter with the highest energy; it uses
ionization instead of bonds
⫸ Robert Boyle. Ans: First to define an element; any substance is a
substance unless it can be broken down
⫸ John Dalton. Ans: Used and combined previous ideas to discuss
the atom; elements are made of atoms; all atoms of an element are
identical; atoms of different elements are different; law of constant
composition; atoms are invisible
⫸ Law of Constant Composition. Ans: Atoms of one element can
combine with other elements to form compounds; a given compound
always has the same relative numbers and types of atoms
⫸ J.J. Thomson. Ans: Discovered electrons and protons and
developed the plum pudding model of an atom
⫸ Electrons. Ans: The negatively charged particle in an atom; circles
around the nucleus in the electron cloud
,⫸ Proton. Ans: The positively charged particle in an atom; located in
the nucleus; determine the element
⫸ Neutron. Ans: The neutral particle in an atom; it has no charge and
is located in the nucleus
⫸ Plum Pudding Model. Ans: A model of the atom that depicts a
sphere of positive charge with electrons scattered throughout
⫸ Ernest Rutherford. Ans: 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. Ans: Elements located on the left side of the periodic table
that want to lose electrons
⫸ Characteristics of Metals. Ans: - Malleable
- Ductile
- Conductive
- Lustrous
⫸ Malleable. Ans: The ability to be molded into shapes
⫸ Ductile. Ans: The ability to be pulled into wire
, ⫸ Conductive. Ans: The ability to allow heat or electricity to pass
through an object
⫸ Lustrous. Ans: The ability to be shiny
⫸ Nonmetals. Ans: Elements located on the right side of the periodic
table that want to gain electrons
⫸ Metalloids. Ans: Elements placed in a stair-step line between
metals and nonmetals; they have characteristics of both
⫸ Diatomic Molecules. Ans: Elements that occur in pairs in their
natural state; hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine,
iodine
⫸ Electronegativity. Ans: 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. Ans: The radius of an atom; decreases as you
move left to right and increases as you move top to bottom
⫸ Ionization Energy. Ans: The energy needed to rip off an electron;
increases as you move left to right and decreases as you move top to
bottom
