ALEKS COMPREHENSIVE QUESTIONS AND
COMPLETE SOLUTIONS
◉ Atoms.
Answer: Basic unit of matter which cannot be broken down and
contain mostly empty space; contains three parts: the electron,
proton, and neutron
◉ Elements.
Answer: A pure substance that contains only one type of atom
◉ Compound.
Answer: Two or more elements that are chemically bonded; includes
ionic and covalent
◉ Mixture.
Answer: Two or more substances that are together but not bonded
◉ Pure Substance.
Answer: Substance that contains only one kind of compound
◉ Bose-Einstein Condensate.
,Answer: The state of matter with the lowest energy; basically a very
cold solid
◉ Solid.
Answer: A state of matter with strong bonds
◉ Liquid.
Answer: A state of matter with weak bonds
◉ Gas.
Answer: A state of matter with no bonds
◉ Plasma.
Answer: The state of matter with the highest energy; it uses
ionization instead of bonds
◉ Robert Boyle.
Answer: First to define an element; any substance is a substance
unless it can be broken down
◉ John Dalton.
Answer: 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.
Answer: 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.
Answer: Discovered electrons and protons and developed the plum
pudding model of an atom
◉ 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.
COMPLETE SOLUTIONS
◉ Atoms.
Answer: Basic unit of matter which cannot be broken down and
contain mostly empty space; contains three parts: the electron,
proton, and neutron
◉ Elements.
Answer: A pure substance that contains only one type of atom
◉ Compound.
Answer: Two or more elements that are chemically bonded; includes
ionic and covalent
◉ Mixture.
Answer: Two or more substances that are together but not bonded
◉ Pure Substance.
Answer: Substance that contains only one kind of compound
◉ Bose-Einstein Condensate.
,Answer: The state of matter with the lowest energy; basically a very
cold solid
◉ Solid.
Answer: A state of matter with strong bonds
◉ Liquid.
Answer: A state of matter with weak bonds
◉ Gas.
Answer: A state of matter with no bonds
◉ Plasma.
Answer: The state of matter with the highest energy; it uses
ionization instead of bonds
◉ Robert Boyle.
Answer: First to define an element; any substance is a substance
unless it can be broken down
◉ John Dalton.
Answer: 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.
Answer: 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.
Answer: Discovered electrons and protons and developed the plum
pudding model of an atom
◉ 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.
