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ACS GEN CHEM 1 FINAL EXAM 150
QUESTIONS AND CORRECT
DETAILED ANSWERS NEWLY
UPDATED VERSION FOR 2024-2025
|ALREADY A GRADED
The physical material of the universe. It is anything that has mass and
occupies space. - answer- matter
Is made up of relatively few elements. - answer- matter
The smallest building block of matter. Smallest particle that retains the
chemical property of the element (o, he, s). - answer- atom
Each _______ is made of the same kind of atom - answer- element
Combination of atoms held together in specific shapes - answer-
molecule
No fixed volume or shape, conforms to
Volume and shape of container, is compressible - answer- gas
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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 - answer- liquid
Rigid with definite shape, very slightly compressible - answer- solid
These stable diatomics - answer- 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 - answer- law of constant (definite)
composition
Characteristics of a substance. Can be observed without changing a
substance into another substance - answer- physical properties
Describes the reactivity of a substance. Can only be observed when a
substance is changed into another substance - answer- chemical
properties:
Does not depend on amount. - answer- intensive property :
Depends on amount. - answer- extensive property
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Substances transform into chemically different substances - answer-
chemical change
No change in chemical composition - answer- physical change
How close to the true value a given measurement is. - answer- accuracy
How well a number of independent measurements agree with one
another. - answer- precision
Electrons were discovered by ______ in 1897, while
Millikan's oil drop experiment determined its charge.
• neutrons were discovered by james chadwick in 1932. - answer- j.j.
thompson
Postulated a very small, dense nucleus with the electrons around the
outside of the atom. Most of the volume of the atom is empty space. -
answer- rutherford
Protons were discovered by______in 1919. - answer- rutherford
Neutrons were discovered by________ in 1932. - answer- james
chadwick
ACS GEN CHEM 1 FINAL EXAM 150
QUESTIONS AND CORRECT
DETAILED ANSWERS NEWLY
UPDATED VERSION FOR 2024-2025
|ALREADY A GRADED
The physical material of the universe. It is anything that has mass and
occupies space. - answer- matter
Is made up of relatively few elements. - answer- matter
The smallest building block of matter. Smallest particle that retains the
chemical property of the element (o, he, s). - answer- atom
Each _______ is made of the same kind of atom - answer- element
Combination of atoms held together in specific shapes - answer-
molecule
No fixed volume or shape, conforms to
Volume and shape of container, is compressible - answer- gas
,2|Page
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 - answer- liquid
Rigid with definite shape, very slightly compressible - answer- solid
These stable diatomics - answer- 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 - answer- law of constant (definite)
composition
Characteristics of a substance. Can be observed without changing a
substance into another substance - answer- physical properties
Describes the reactivity of a substance. Can only be observed when a
substance is changed into another substance - answer- chemical
properties:
Does not depend on amount. - answer- intensive property :
Depends on amount. - answer- extensive property
, 3|Page
Substances transform into chemically different substances - answer-
chemical change
No change in chemical composition - answer- physical change
How close to the true value a given measurement is. - answer- accuracy
How well a number of independent measurements agree with one
another. - answer- precision
Electrons were discovered by ______ in 1897, while
Millikan's oil drop experiment determined its charge.
• neutrons were discovered by james chadwick in 1932. - answer- j.j.
thompson
Postulated a very small, dense nucleus with the electrons around the
outside of the atom. Most of the volume of the atom is empty space. -
answer- rutherford
Protons were discovered by______in 1919. - answer- rutherford
Neutrons were discovered by________ in 1932. - answer- james
chadwick
