Intro to Chemistry: Exam 1 CORRECT
ANSWERS 2025
What is Matter? - CORRECT-ANSWERS______ is anything that occupies space and
has mass.
What is Mass? - CORRECT-ANSWERS____ is the amount of matter in an object;
never changes
What is Weight? - CORRECT-ANSWERS_______ is the gravitational force exerted
on an object; can change
Define: Element - CORRECT-ANSWERS_______ is made up of molecules/atoms of
the same kind; cannot be chemically subdivided into simpler substances
Define: Compound - CORRECT-ANSWERS________ is made up of molecules/atoms
of two or more kinds; can be chemically subdivided into simpler substances
Define: Atom - CORRECT-ANSWERSA/An ____ is the unit from which matter is
made; limit of chemical subdivision; smallest particle of an element;
composed of protons, neutrons, and electrons
Define: Nucleus - CORRECT-ANSWERSThe _______ is the central core of atoms
that contains protons and neutrons; has a positive(+) charge equal(=) to the
number of protons
Define: Electrons - CORRECT-ANSWERS_________ move in a circular orbit around
the positive(+) nucleus
Define: Atomic Weight - CORRECT-ANSWERS______ ______ is the relative weight
of atoms in terms of C12; the sum of protons and neutrons
, Define: Gram Atomic Weight - CORRECT-ANSWERS____ ______ ______ is the atomic
weight expressed in grams
Define: Molecule - CORRECT-ANSWERSA/An ________ is the smallest unit of a
compound
Define: Molecular Weight - CORRECT-ANSWERS________ ______ is the sum of the
atomic weights of all the atoms forming the molecule
Define: Gram Molecular Weight - CORRECT-ANSWERSThe _________ ______ is the
molecular weight of a compound expressed in grams
Define: Electrolyte - CORRECT-ANSWERSA/An ___________ is a substance whose
solution will conduct an electric current
Define: Acid - CORRECT-ANSWERS____ is a substance that yields hydrogen ions
in solution
Define: Base - CORRECT-ANSWERS____ is a substance that yields a hydroxyl
(OH-) ion in solution; substance that can accept a proton
Define: Salt - CORRECT-ANSWERS____s are compounds formed by replacing the
hydrogen of an acid with a metal
Define: Radical / Polyatomic Groups - CORRECT-ANSWERSA _______ or __________
_____ is a group of elements that behave like a single element
Define: Valence - CORRECT-ANSWERS_______ is the property of an element that
determines the number of hydrogen (H) atoms that its atom can combine
with or displace
Define: Chemistry - CORRECT-ANSWERS_________ is the study of matter
ANSWERS 2025
What is Matter? - CORRECT-ANSWERS______ is anything that occupies space and
has mass.
What is Mass? - CORRECT-ANSWERS____ is the amount of matter in an object;
never changes
What is Weight? - CORRECT-ANSWERS_______ is the gravitational force exerted
on an object; can change
Define: Element - CORRECT-ANSWERS_______ is made up of molecules/atoms of
the same kind; cannot be chemically subdivided into simpler substances
Define: Compound - CORRECT-ANSWERS________ is made up of molecules/atoms
of two or more kinds; can be chemically subdivided into simpler substances
Define: Atom - CORRECT-ANSWERSA/An ____ is the unit from which matter is
made; limit of chemical subdivision; smallest particle of an element;
composed of protons, neutrons, and electrons
Define: Nucleus - CORRECT-ANSWERSThe _______ is the central core of atoms
that contains protons and neutrons; has a positive(+) charge equal(=) to the
number of protons
Define: Electrons - CORRECT-ANSWERS_________ move in a circular orbit around
the positive(+) nucleus
Define: Atomic Weight - CORRECT-ANSWERS______ ______ is the relative weight
of atoms in terms of C12; the sum of protons and neutrons
, Define: Gram Atomic Weight - CORRECT-ANSWERS____ ______ ______ is the atomic
weight expressed in grams
Define: Molecule - CORRECT-ANSWERSA/An ________ is the smallest unit of a
compound
Define: Molecular Weight - CORRECT-ANSWERS________ ______ is the sum of the
atomic weights of all the atoms forming the molecule
Define: Gram Molecular Weight - CORRECT-ANSWERSThe _________ ______ is the
molecular weight of a compound expressed in grams
Define: Electrolyte - CORRECT-ANSWERSA/An ___________ is a substance whose
solution will conduct an electric current
Define: Acid - CORRECT-ANSWERS____ is a substance that yields hydrogen ions
in solution
Define: Base - CORRECT-ANSWERS____ is a substance that yields a hydroxyl
(OH-) ion in solution; substance that can accept a proton
Define: Salt - CORRECT-ANSWERS____s are compounds formed by replacing the
hydrogen of an acid with a metal
Define: Radical / Polyatomic Groups - CORRECT-ANSWERSA _______ or __________
_____ is a group of elements that behave like a single element
Define: Valence - CORRECT-ANSWERS_______ is the property of an element that
determines the number of hydrogen (H) atoms that its atom can combine
with or displace
Define: Chemistry - CORRECT-ANSWERS_________ is the study of matter
