CHM 113 EXAM 1 KITZMILLER
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Chemistry - ANS the study of matter and the changes that matter undergoes
matter - ANS the psychical material of the universe; anything that has mass and occupies
space.
property - ANS any characteristic that allows us to recognize a particular type of matter and
to distinguish from other types.
atoms - ANS the infinitesimal (submicroscopic) building blocks of matter
molecules - ANS two or more atoms joined in specific shape
states of matter - ANS gas, liquid, solid
gas - ANS has no fixed volume or shape; uniformly fills a container.
liquid - ANS distinct volume indépendant of its container; assumes the shape of the portion
of the container it occupies.
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, solid - ANS definite shape and definite volume
what is a pure substance? - ANS matter that has distinct properties and a composition that
does not vary from sample to sample. All substances are either elements of compounds.
What is an element? - ANS (on the molecular level) only composed of one kind of atom and
cannot be decomposed into similar substances.
what is a compound? - ANS substances composed of two or more elements (contain two or
more different kinds of atoms).
What is a mixture? - ANS a combination of two or more in which each retains its chemical
identity.
What 5 elements account for over 90% of the earth's crust? - ANS oxygen, silicon, aluminum,
iron, and calcium.
Law of definite proportions - ANS the elemental composition of a pure compound is always
the same, regardless of it's source.
What is a homogenous mixture? - ANS a mixture of substances that has a uniform
composition.
what is a heterogenous mixture? - ANS mixtures that are not uniform throughout.
what are the 2 different properties of matter? - ANS chemical and physical.
physical change - ANS changes that occur with no change in chemical composition.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Chemistry - ANS the study of matter and the changes that matter undergoes
matter - ANS the psychical material of the universe; anything that has mass and occupies
space.
property - ANS any characteristic that allows us to recognize a particular type of matter and
to distinguish from other types.
atoms - ANS the infinitesimal (submicroscopic) building blocks of matter
molecules - ANS two or more atoms joined in specific shape
states of matter - ANS gas, liquid, solid
gas - ANS has no fixed volume or shape; uniformly fills a container.
liquid - ANS distinct volume indépendant of its container; assumes the shape of the portion
of the container it occupies.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, solid - ANS definite shape and definite volume
what is a pure substance? - ANS matter that has distinct properties and a composition that
does not vary from sample to sample. All substances are either elements of compounds.
What is an element? - ANS (on the molecular level) only composed of one kind of atom and
cannot be decomposed into similar substances.
what is a compound? - ANS substances composed of two or more elements (contain two or
more different kinds of atoms).
What is a mixture? - ANS a combination of two or more in which each retains its chemical
identity.
What 5 elements account for over 90% of the earth's crust? - ANS oxygen, silicon, aluminum,
iron, and calcium.
Law of definite proportions - ANS the elemental composition of a pure compound is always
the same, regardless of it's source.
What is a homogenous mixture? - ANS a mixture of substances that has a uniform
composition.
what is a heterogenous mixture? - ANS mixtures that are not uniform throughout.
what are the 2 different properties of matter? - ANS chemical and physical.
physical change - ANS changes that occur with no change in chemical composition.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
