ALEKS PLACEMENT TEST : CHEMISTRY
EXAM 2026
how to find celsius - ANSWER-degree kelvin given - 273
how to find kelvin - ANSWER-273 + degree of celsius given
= farenheit - ANSWER-c x 9/5 +32
= celsius - ANSWER-(F-32) x 5/9
-even electron distribution - ANSWER-nonpolar
-electrons are not shared equally - ANSWER-polar
A bond between 2 nonmetal atoms that have the same electronegativity and
therefore have equal sharing of the bonding electron pair. - ANSWER-Nonpolar
Covalent Bond
A bond between 2 nonmetal atoms that have different electronegativities and
therefore have unequal sharing of the bonding electron pair. - ANSWER-Polar
Covalent Bond
(1) & (2) & (3) increase towards top right
(4) increase towards bottom left - ANSWER-Periodic Trends
(1) Electronegativity
,(2) Ionization Energy
(3) Electron Affinity
(4) Atomic Radius
CxHy + O2 -> CO2 + H2O - ANSWER-Combustion Reaction
process of reacting monomer molecules together in a chemical reaction to form
polymer chains or three-dimensional networks. - ANSWER-Polymerization
Oxygen combines with a compound to form carbon dioxide and water. These
reactions are exothermic, meaning they give off heat. - ANSWER-Combustion
Reaction
One element trades places with another element in the compound. - ANSWER-
Displacement Reaction
Any substance that contains only one kind of an atom - ANSWER-Element
Elements combine to form chemical compounds - ANSWER-Compound
Metals often react with nonmetals to form ionic compounds. These compounds
are composed of positive and negative ions formed by adding or subtracting
electrons from neutral atoms and molecules. - ANSWER-Ionic Compound
Nonmetals combine with each other to form covalent compounds, which exist
as neutral molecules. - ANSWER-Covalent Compound
The smallest particle that has any of the properties of a compound - ANSWER-
Molecule
, Solids, liquids, gases, plasmas, and Bose-Einstein condensates - ANSWER-Five
states of Matter
Ranges from 1 to 14, with 7 considered to be neutral.
*pH less than 7 is said to be acidic
*pH greater than 7 are basic or alkaline. - ANSWER-PH Scale
A substance that increases the hydrogen ion concentration of a solution. -
ANSWER-Acid
A substance that decreases the hydrogen ion concentration in a solution. -
ANSWER-Base
contains only one component
has characteristic properties - ANSWER-pure substance
contains many different components - ANSWER-mixture
does the composition of a compound ever change? - ANSWER-no
periods - ANSWER-horizontal rows
groups - ANSWER-vertical rows
charge and mass of a proton - ANSWER-charge: +1
mass: 1
charge and mass of a neutron - ANSWER-charge: 0
EXAM 2026
how to find celsius - ANSWER-degree kelvin given - 273
how to find kelvin - ANSWER-273 + degree of celsius given
= farenheit - ANSWER-c x 9/5 +32
= celsius - ANSWER-(F-32) x 5/9
-even electron distribution - ANSWER-nonpolar
-electrons are not shared equally - ANSWER-polar
A bond between 2 nonmetal atoms that have the same electronegativity and
therefore have equal sharing of the bonding electron pair. - ANSWER-Nonpolar
Covalent Bond
A bond between 2 nonmetal atoms that have different electronegativities and
therefore have unequal sharing of the bonding electron pair. - ANSWER-Polar
Covalent Bond
(1) & (2) & (3) increase towards top right
(4) increase towards bottom left - ANSWER-Periodic Trends
(1) Electronegativity
,(2) Ionization Energy
(3) Electron Affinity
(4) Atomic Radius
CxHy + O2 -> CO2 + H2O - ANSWER-Combustion Reaction
process of reacting monomer molecules together in a chemical reaction to form
polymer chains or three-dimensional networks. - ANSWER-Polymerization
Oxygen combines with a compound to form carbon dioxide and water. These
reactions are exothermic, meaning they give off heat. - ANSWER-Combustion
Reaction
One element trades places with another element in the compound. - ANSWER-
Displacement Reaction
Any substance that contains only one kind of an atom - ANSWER-Element
Elements combine to form chemical compounds - ANSWER-Compound
Metals often react with nonmetals to form ionic compounds. These compounds
are composed of positive and negative ions formed by adding or subtracting
electrons from neutral atoms and molecules. - ANSWER-Ionic Compound
Nonmetals combine with each other to form covalent compounds, which exist
as neutral molecules. - ANSWER-Covalent Compound
The smallest particle that has any of the properties of a compound - ANSWER-
Molecule
, Solids, liquids, gases, plasmas, and Bose-Einstein condensates - ANSWER-Five
states of Matter
Ranges from 1 to 14, with 7 considered to be neutral.
*pH less than 7 is said to be acidic
*pH greater than 7 are basic or alkaline. - ANSWER-PH Scale
A substance that increases the hydrogen ion concentration of a solution. -
ANSWER-Acid
A substance that decreases the hydrogen ion concentration in a solution. -
ANSWER-Base
contains only one component
has characteristic properties - ANSWER-pure substance
contains many different components - ANSWER-mixture
does the composition of a compound ever change? - ANSWER-no
periods - ANSWER-horizontal rows
groups - ANSWER-vertical rows
charge and mass of a proton - ANSWER-charge: +1
mass: 1
charge and mass of a neutron - ANSWER-charge: 0
