Chem 1020 Final Exam Study Guide ACTUAL UPDATED QUESTIONS AND
CORRECT ANSWERS
Matter. Any solid, liquid, gas, or plasma that occupies space and has a mass.
Mixture. A combination of two or more substances that are not chemically combined.
Homogeneous. A single-phase combination of solids, liquids, or gases with a uniform distribution
of its constituents throughout the substance.
, Heterogeneous. A single-phase combination of solids, liquids, or gases that are not uniformly
distributed throughout the substance.
Solution. A homogeneous (of uniform composition) mixture of a solvent and one or more
solutes.
Atom. The smallest building block that can exist as a stable, independent entity.
Element. One of the 100 or so pure substances in our world from which compounds are
formed. Elements contain only one type of atom.
Compound. A pure substance that is comprised of two or more different types of atoms in a
fixed, characteristic chemical combination.
Molecule. Two or more atoms held together by chemical bonds in a certain spatial
arrangement.
Chemical formula. A symbolic way to represent the elementary composition of a substance. It
reveals both the elements present (by chemical symbols) and the atomic ratio of
those elements (by the subscripts).
Molecular compound. A pure substance that contains two or more atoms from nonmetallic elements.
Ionic compound. A compound composed of ions that are present in fixed proportions and
arranged in regular, geometric structure.
Allotropes. Different structural forms of the same element.
The names of Groups 1 and 2. Group 1 - Alkali metals.
Group 2 -Alkaline earth metals.
The names of Groups 17 and 18. Group 17 - Halogens.
Group 18 - Noble gases.
CORRECT ANSWERS
Matter. Any solid, liquid, gas, or plasma that occupies space and has a mass.
Mixture. A combination of two or more substances that are not chemically combined.
Homogeneous. A single-phase combination of solids, liquids, or gases with a uniform distribution
of its constituents throughout the substance.
, Heterogeneous. A single-phase combination of solids, liquids, or gases that are not uniformly
distributed throughout the substance.
Solution. A homogeneous (of uniform composition) mixture of a solvent and one or more
solutes.
Atom. The smallest building block that can exist as a stable, independent entity.
Element. One of the 100 or so pure substances in our world from which compounds are
formed. Elements contain only one type of atom.
Compound. A pure substance that is comprised of two or more different types of atoms in a
fixed, characteristic chemical combination.
Molecule. Two or more atoms held together by chemical bonds in a certain spatial
arrangement.
Chemical formula. A symbolic way to represent the elementary composition of a substance. It
reveals both the elements present (by chemical symbols) and the atomic ratio of
those elements (by the subscripts).
Molecular compound. A pure substance that contains two or more atoms from nonmetallic elements.
Ionic compound. A compound composed of ions that are present in fixed proportions and
arranged in regular, geometric structure.
Allotropes. Different structural forms of the same element.
The names of Groups 1 and 2. Group 1 - Alkali metals.
Group 2 -Alkaline earth metals.
The names of Groups 17 and 18. Group 17 - Halogens.
Group 18 - Noble gases.
