ACS GEN CHEM 1 FINAL EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
The physical material of the universe. It is anything that has mass and occupies space. -
ANS Matter
is made up of relatively few elements. - ANS Matter
The smallest building block of matter. Smallest particle that retains the chemical property of the
element (O, He, S). - ANS Atom
Each _______ is made of the same kind of atom - ANS Element
Combination of atoms held together in specific shapes - ANS Molecule
No fixed volume or shape, conforms to
volume and shape of container, is compressible - ANS Gas
Individual particles are confined to a given volume, liquid flows (no definite shape) and assumes
the shape of its container up to the volume of the liquid, slightly compressible - ANS Liquid
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Rigid with definite shape, very slightly compressible - ANS Solid
these stable diatomics - ANS H2,O2, N2, and the Halogens (F2, Cl2, Br2, I2)
Different samples of any pure compound contain the same elements in the same proportion by
mass - ANS Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without changing a substance into another
substance - ANS Physical Properties
Describes the reactivity of a substance. Can only be observed when a substance is changed into
another substance - ANS Chemical properties:
Does not depend on amount. - ANS Intensive property :
Depends on amount. - ANS Extensive property
Substances transform into chemically different substances - ANS Chemical change
No change in chemical composition - ANS Physical change
How close to the true value a given measurement is. - ANS Accuracy
How well a number of independent measurements agree with one another. - ANS Precision
Electrons were discovered by ______ in 1897, while
Millikan's Oil Drop experiment determined its charge.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS GRADED A+
2025/2026
The physical material of the universe. It is anything that has mass and occupies space. -
ANS Matter
is made up of relatively few elements. - ANS Matter
The smallest building block of matter. Smallest particle that retains the chemical property of the
element (O, He, S). - ANS Atom
Each _______ is made of the same kind of atom - ANS Element
Combination of atoms held together in specific shapes - ANS Molecule
No fixed volume or shape, conforms to
volume and shape of container, is compressible - ANS Gas
Individual particles are confined to a given volume, liquid flows (no definite shape) and assumes
the shape of its container up to the volume of the liquid, slightly compressible - ANS Liquid
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Rigid with definite shape, very slightly compressible - ANS Solid
these stable diatomics - ANS H2,O2, N2, and the Halogens (F2, Cl2, Br2, I2)
Different samples of any pure compound contain the same elements in the same proportion by
mass - ANS Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without changing a substance into another
substance - ANS Physical Properties
Describes the reactivity of a substance. Can only be observed when a substance is changed into
another substance - ANS Chemical properties:
Does not depend on amount. - ANS Intensive property :
Depends on amount. - ANS Extensive property
Substances transform into chemically different substances - ANS Chemical change
No change in chemical composition - ANS Physical change
How close to the true value a given measurement is. - ANS Accuracy
How well a number of independent measurements agree with one another. - ANS Precision
Electrons were discovered by ______ in 1897, while
Millikan's Oil Drop experiment determined its charge.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
