HESI-A2 CHEMISTRY
Chemistry note cards for HESI entrance exam
Question Answer
Matter that has a definite shape and volume solid
Matter that changes in volume with changes in
gas
temperature and pressure
A ____________ change of matter is when no
change is made to the chemical composition of a physical
substance.
Simplest of substances and is represented by a
element
letter or letters
Law that states matter can neither be created nor
Law of conservation of mass
destroyed during a chemical reaction
The breaking of bonds and reforming of new
bonds to create new chemical compounds with
Chemical reaction
different chemical formulas and different chemical
properties
synthesis, decomposition, combustion,
5 main chemical reactions
single replacement, double replacement
Chemical reaction in which 2 elements combine to
synthesis
form a product
Chemical reaction that is the breaking of a
decomposition
compound into component parts
The chemical reaction that is the reaction of a
combustion
compound with oxygen
Chemical reaction that consists of an active metal
reaction with an ionic compound creating a new single replacement
compound
Chemical reaction involving 2 ionic compounds;
double replacement
the reactant yields "switched partners"
how elements are arranged on the periodic table by their chemical properties
Number that represents the # of protons an atomic number
, element has
average of the masses of each of its isotopes as
atomic mass
they occur in nature
Mass number - atomic number = ____________ # of neutrons in an element
Columns of the periodic table = ________ groups
Rows of the periodic table = ___________ periods
Group IA = _____ charge +1
Group IIA = ______ charge +2
Group IIIA = ______ charge +3
Group VA = ______ charge -3
Group VIA = ______ charge -2
Group VIIA = ______ charge -1
Charge of noble gases 0
Positively charged ions protons
Negatively charged ions electrons
Neutral ions neutrons
# of proteins in an element = ________ atomic number
proteins + neutrons = ______ mass number
In ________ reactions, atoms try to reach stable
chemical
electron configurations.
___________ reactions take place in the nucleus,
nuclear
to obtain stable nuclear configurations.
Word used to describe the emission of particles
radioactivity
from an unstable nucleus.
The particles that are emitted during radioactivity radiation
3 types of radiation alpha, beta, gamma
Radiation that is the emission of helium ions alpha
Alpha radiation particles have a charge of ______ +2
Chemistry note cards for HESI entrance exam
Question Answer
Matter that has a definite shape and volume solid
Matter that changes in volume with changes in
gas
temperature and pressure
A ____________ change of matter is when no
change is made to the chemical composition of a physical
substance.
Simplest of substances and is represented by a
element
letter or letters
Law that states matter can neither be created nor
Law of conservation of mass
destroyed during a chemical reaction
The breaking of bonds and reforming of new
bonds to create new chemical compounds with
Chemical reaction
different chemical formulas and different chemical
properties
synthesis, decomposition, combustion,
5 main chemical reactions
single replacement, double replacement
Chemical reaction in which 2 elements combine to
synthesis
form a product
Chemical reaction that is the breaking of a
decomposition
compound into component parts
The chemical reaction that is the reaction of a
combustion
compound with oxygen
Chemical reaction that consists of an active metal
reaction with an ionic compound creating a new single replacement
compound
Chemical reaction involving 2 ionic compounds;
double replacement
the reactant yields "switched partners"
how elements are arranged on the periodic table by their chemical properties
Number that represents the # of protons an atomic number
, element has
average of the masses of each of its isotopes as
atomic mass
they occur in nature
Mass number - atomic number = ____________ # of neutrons in an element
Columns of the periodic table = ________ groups
Rows of the periodic table = ___________ periods
Group IA = _____ charge +1
Group IIA = ______ charge +2
Group IIIA = ______ charge +3
Group VA = ______ charge -3
Group VIA = ______ charge -2
Group VIIA = ______ charge -1
Charge of noble gases 0
Positively charged ions protons
Negatively charged ions electrons
Neutral ions neutrons
# of proteins in an element = ________ atomic number
proteins + neutrons = ______ mass number
In ________ reactions, atoms try to reach stable
chemical
electron configurations.
___________ reactions take place in the nucleus,
nuclear
to obtain stable nuclear configurations.
Word used to describe the emission of particles
radioactivity
from an unstable nucleus.
The particles that are emitted during radioactivity radiation
3 types of radiation alpha, beta, gamma
Radiation that is the emission of helium ions alpha
Alpha radiation particles have a charge of ______ +2
