CSET Multiple Subjects Subtest 2: Science; Mathematics with Correct
Answers 100% Verified and Graded A+ 2026
atom - Correct Answer the smallest unit of an element that still holds the properties of the
element. Made up of protons, neutrons, and electrons
proton - Correct Answer positively charged, located in the nucleus of the atom, has a mass of
1AMU
neutron - Correct Answer neutral charge, located in the nucleus of the atom, has a mass of 1
AMU
electron - Correct Answer has a negative charge, orbits outside of the nucleus, has a mass of
1/1836 AMU
balanced atom - Correct Answer same number of protons and electrons
ion - Correct Answer atom with an unbalanced charge--either positive or negative.
isotope - Correct Answer an atom with a different number of neutrons than the standard
amount for that element.
atomic mass - Correct Answer the amount of matter that makes up an atom. Estimate in AMUs
by adding up the protons and neutrons.
atomic number - Correct Answer The number of protons an atom has. This defines the type of
element.
,half-life - Correct Answer the time it takes for half of the atoms of a particular substance to
disintegrate.
carbon dating - Correct Answer Method of measuring the ratio of Carbon 14 to Carbon 12. The
longer something has been dead, the "more" carbon 12 it has. Only accurate on items <50,000
years old.
periodic table of elements - Correct Answer Elements are arranged in rows according to their
atomic number, and columns loosely according to their chemical properties.
compound - Correct Answer a substance of 2 or more elements (ex. H20--water, CO2--carbon
dioxide, NaCL--table salt)
ionic bond - Correct Answer bonds a metal with a non-metal. One atom loses an electron to
form a positive ion, and the other gains an electron to form a negative ion; creating an
electrostatic force that holds them together.
covalent bond - Correct Answer a bond formed when atoms share 1 or more of their valence
electrons.
chemical change - Correct Answer the chemical composition of a substance is altered.
hint: fire is an example of a chemical change taking place.
catalyst - Correct Answer something that starts a chemical change (ex. a spark)
mixture - Correct Answer material that can be separated by physical means into two or more
substances
, solution - Correct Answer homogenus mixture in which one substance is completely dissolved
into another substance (ex. salt water)
suspension - Correct Answer a mixture in which small particles are kept dispersed by agitation
or molecular motion in a surrounding medium (ex. muddy river water)
physical change - Correct Answer a change from one state to another without a change in the
chemical composition of a substance
compression - Correct Answer changes the volume of a substance
states of matter - Correct Answer solid, liquid, gas, plasma
solid - Correct Answer cannot be compressed; does not take the shape of its container
liquid - Correct Answer cannot be compressed; does take on the shape of its container
gas - Correct Answer can be compressed; does take on the shape of its container
temperature and pressure - Correct Answer the factors that change matter from one state to
another
Charles' Law - Correct Answer when the temperature of a substance increases, so does its
volume
Boyle's Law - Correct Answer When the pressure of a substance increases, its volume decreases
Answers 100% Verified and Graded A+ 2026
atom - Correct Answer the smallest unit of an element that still holds the properties of the
element. Made up of protons, neutrons, and electrons
proton - Correct Answer positively charged, located in the nucleus of the atom, has a mass of
1AMU
neutron - Correct Answer neutral charge, located in the nucleus of the atom, has a mass of 1
AMU
electron - Correct Answer has a negative charge, orbits outside of the nucleus, has a mass of
1/1836 AMU
balanced atom - Correct Answer same number of protons and electrons
ion - Correct Answer atom with an unbalanced charge--either positive or negative.
isotope - Correct Answer an atom with a different number of neutrons than the standard
amount for that element.
atomic mass - Correct Answer the amount of matter that makes up an atom. Estimate in AMUs
by adding up the protons and neutrons.
atomic number - Correct Answer The number of protons an atom has. This defines the type of
element.
,half-life - Correct Answer the time it takes for half of the atoms of a particular substance to
disintegrate.
carbon dating - Correct Answer Method of measuring the ratio of Carbon 14 to Carbon 12. The
longer something has been dead, the "more" carbon 12 it has. Only accurate on items <50,000
years old.
periodic table of elements - Correct Answer Elements are arranged in rows according to their
atomic number, and columns loosely according to their chemical properties.
compound - Correct Answer a substance of 2 or more elements (ex. H20--water, CO2--carbon
dioxide, NaCL--table salt)
ionic bond - Correct Answer bonds a metal with a non-metal. One atom loses an electron to
form a positive ion, and the other gains an electron to form a negative ion; creating an
electrostatic force that holds them together.
covalent bond - Correct Answer a bond formed when atoms share 1 or more of their valence
electrons.
chemical change - Correct Answer the chemical composition of a substance is altered.
hint: fire is an example of a chemical change taking place.
catalyst - Correct Answer something that starts a chemical change (ex. a spark)
mixture - Correct Answer material that can be separated by physical means into two or more
substances
, solution - Correct Answer homogenus mixture in which one substance is completely dissolved
into another substance (ex. salt water)
suspension - Correct Answer a mixture in which small particles are kept dispersed by agitation
or molecular motion in a surrounding medium (ex. muddy river water)
physical change - Correct Answer a change from one state to another without a change in the
chemical composition of a substance
compression - Correct Answer changes the volume of a substance
states of matter - Correct Answer solid, liquid, gas, plasma
solid - Correct Answer cannot be compressed; does not take the shape of its container
liquid - Correct Answer cannot be compressed; does take on the shape of its container
gas - Correct Answer can be compressed; does take on the shape of its container
temperature and pressure - Correct Answer the factors that change matter from one state to
another
Charles' Law - Correct Answer when the temperature of a substance increases, so does its
volume
Boyle's Law - Correct Answer When the pressure of a substance increases, its volume decreases
