CHEM 111 FINAL PSU 2026 ACTUAL TEST
PAPER QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ matter. Answer: Anything that has mass and takes up space
⩥ elements. Answer: molecules composed of one kind of atom; cannot
be broken into simpler units by chemical reactions.
⩥ atoms. Answer: The basic building blocks of matter
⩥ property. Answer: A characteristic that defines the value, appearance,
and/or state of an object.
⩥ molecule. Answer: A group of atoms bonded together
⩥ gas. Answer: A state of matter with no definite shape or volume
⩥ liquid. Answer: A state of matter that has a definite volume but no
definite shape.
⩥ solid. Answer: A form of matter that has a definite shape and volume
,⩥ states of matter. Answer: The physical forms of matter, which include
solid, liquid, and gas
⩥ pure substance. Answer: A sample of matter, either a single element or
a single compound, that has definite chemical and physical properties
⩥ compounds. Answer: 2 or more elements chemically combined
⩥ law of constant composition. Answer: In any given compound of any
given amount, the elements will always be found in the same
proportions by mass. (law of definite proportions)
⩥ mixtures. Answer: 2 or more components physically combined
together; atoms and molecules don't change as there is no chemical
bonding. Can separate out the components.
⩥ heterogeneous mixture. Answer: A mixture that is not uniform in
composition; components are not evenly distributed throughout the
mixture
⩥ homogeneous mixture. Answer: A mixture in which substances are
evenly distributed throughout the mixture
, ⩥ mixture. Answer: A combination of two or more substances that are
not chemically combined
⩥ physical properties. Answer: Characteristics of matter that can be seen
through direct observation such as density, melting point, and boiling
point.
⩥ chemical properties. Answer: Describe the way a substance may
change, or react, to form other substances. (Ex: Flammability)
⩥ chemical change. Answer: A change in matter that produces one or
more new substances
⩥ physical change. Answer: A change in a substance that does not
involve a change in the identity of the substance
⩥ state change. Answer: When matter changes from one state to another
⩥ intensive property. Answer: A property that does not depend on the
amount of matter present, such as pressure, temperature, or density.
⩥ extensive property. Answer: A physical property, such as mass, length,
and volume, that is dependent upon the amount of substance present.
PAPER QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ matter. Answer: Anything that has mass and takes up space
⩥ elements. Answer: molecules composed of one kind of atom; cannot
be broken into simpler units by chemical reactions.
⩥ atoms. Answer: The basic building blocks of matter
⩥ property. Answer: A characteristic that defines the value, appearance,
and/or state of an object.
⩥ molecule. Answer: A group of atoms bonded together
⩥ gas. Answer: A state of matter with no definite shape or volume
⩥ liquid. Answer: A state of matter that has a definite volume but no
definite shape.
⩥ solid. Answer: A form of matter that has a definite shape and volume
,⩥ states of matter. Answer: The physical forms of matter, which include
solid, liquid, and gas
⩥ pure substance. Answer: A sample of matter, either a single element or
a single compound, that has definite chemical and physical properties
⩥ compounds. Answer: 2 or more elements chemically combined
⩥ law of constant composition. Answer: In any given compound of any
given amount, the elements will always be found in the same
proportions by mass. (law of definite proportions)
⩥ mixtures. Answer: 2 or more components physically combined
together; atoms and molecules don't change as there is no chemical
bonding. Can separate out the components.
⩥ heterogeneous mixture. Answer: A mixture that is not uniform in
composition; components are not evenly distributed throughout the
mixture
⩥ homogeneous mixture. Answer: A mixture in which substances are
evenly distributed throughout the mixture
, ⩥ mixture. Answer: A combination of two or more substances that are
not chemically combined
⩥ physical properties. Answer: Characteristics of matter that can be seen
through direct observation such as density, melting point, and boiling
point.
⩥ chemical properties. Answer: Describe the way a substance may
change, or react, to form other substances. (Ex: Flammability)
⩥ chemical change. Answer: A change in matter that produces one or
more new substances
⩥ physical change. Answer: A change in a substance that does not
involve a change in the identity of the substance
⩥ state change. Answer: When matter changes from one state to another
⩥ intensive property. Answer: A property that does not depend on the
amount of matter present, such as pressure, temperature, or density.
⩥ extensive property. Answer: A physical property, such as mass, length,
and volume, that is dependent upon the amount of substance present.
