ACS Chemistry Final Exam I – 2024
the physical material of the universe. It is anything that has mass
and occupies space. - Precise Answer ✔✔Matter
is made up of relatively few elements. - Precise Answer
✔✔Matter
The smallest building block of matter. Smallest particle that
retains the chemical property of the element (O, He, S). - Precise
Answer ✔✔Atom
Each _______ is made of the same kind of atom - Precise
Answer ✔✔Element
Combination of atoms held together in specific shapes - Precise
Answer ✔✔Molecule
No fixed volume or shape, conforms to
volume and shape of container, is compressible - Precise
Answer ✔✔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 - Precise Answer
✔✔Liquid
Rigid with definite shape, very slightly compressible - Precise
Answer ✔✔Solid
these stable diatomics - Precise 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 - Precise Answer
✔✔Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without
changing a substance into another substance - Precise Answer
✔✔Physical Properties
Describes the reactivity of a substance. Can only be observed
when a substance is changed into another substance - Precise
Answer ✔✔Chemical properties:
,Does not depend on amount. - Precise Answer ✔✔Intensive
property :
Depends on amount. - Precise Answer ✔✔Extensive property
Substances transform into chemically different substances -
Precise Answer ✔✔Chemical change
No change in chemical composition - Precise Answer
✔✔Physical change
How close to the true value a given measurement is. - Precise
Answer ✔✔Accuracy
How well a number of independent measurements agree with
one another. - Precise 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. -
Precise 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. - Precise Answer ✔✔Rutherford
Protons were discovered by______in 1919. - Precise Answer
✔✔Rutherford
Neutrons were discovered by________ in 1932. - Precise
Answer ✔✔James Chadwick
1) All matter is made of atoms. Atoms are indivisible and
indestructible.
2) All atoms of a given element are identical in mass and
properties
3) Compounds are formed by a combination of two or more
different kinds of atoms.
4) A chemical reaction is a rearrangement of atoms. - Precise
Answer ✔✔Dalton's Atomic Theory
the physical material of the universe. It is anything that has mass
and occupies space. - Precise Answer ✔✔Matter
is made up of relatively few elements. - Precise Answer
✔✔Matter
The smallest building block of matter. Smallest particle that
retains the chemical property of the element (O, He, S). - Precise
Answer ✔✔Atom
Each _______ is made of the same kind of atom - Precise
Answer ✔✔Element
Combination of atoms held together in specific shapes - Precise
Answer ✔✔Molecule
No fixed volume or shape, conforms to
volume and shape of container, is compressible - Precise
Answer ✔✔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 - Precise Answer
✔✔Liquid
Rigid with definite shape, very slightly compressible - Precise
Answer ✔✔Solid
these stable diatomics - Precise 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 - Precise Answer
✔✔Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without
changing a substance into another substance - Precise Answer
✔✔Physical Properties
Describes the reactivity of a substance. Can only be observed
when a substance is changed into another substance - Precise
Answer ✔✔Chemical properties:
,Does not depend on amount. - Precise Answer ✔✔Intensive
property :
Depends on amount. - Precise Answer ✔✔Extensive property
Substances transform into chemically different substances -
Precise Answer ✔✔Chemical change
No change in chemical composition - Precise Answer
✔✔Physical change
How close to the true value a given measurement is. - Precise
Answer ✔✔Accuracy
How well a number of independent measurements agree with
one another. - Precise 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. -
Precise 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. - Precise Answer ✔✔Rutherford
Protons were discovered by______in 1919. - Precise Answer
✔✔Rutherford
Neutrons were discovered by________ in 1932. - Precise
Answer ✔✔James Chadwick
1) All matter is made of atoms. Atoms are indivisible and
indestructible.
2) All atoms of a given element are identical in mass and
properties
3) Compounds are formed by a combination of two or more
different kinds of atoms.
4) A chemical reaction is a rearrangement of atoms. - Precise
Answer ✔✔Dalton's Atomic Theory
