Practice Vocabulary Quiz - Chemistry
_ Atom
A. The measurement of how much mass of a substance
is contained in a given volume.
_ Atomic mass
B. A pure substance that cannot be broken down into
other substances by chemical or physical means.
_ Atomic number
C. A metal strip that conducts electricity.
_ Chemical bond
D. A bond between two or more elements where the
atoms share electrons.
_ Chemical change
E. A pure substance made of two or more elements
chemically combined.
_ Chemical formula
F. The study of the properties of matter and how mater
changes.
_ Chemical property
G. A formula that gives the elements in a compound
and the ratio of atoms.
H. A one, or two-letter representation of an element.
_ Chemical symbol
_ Chemistry
I. The length of time needed for half of the atoms of a
sample of a radioactive isotope to decay.
J. The number of protons in the nucleus of an atom.
_ Compound
_ Covalent bond
K. An atom with the same number of protons and a
different number of neutrons from other atoms of
the same element.
_ Density
L. A tiny, negatively charged particle that moves
around the nucleus of an atom.
_ Electrode
M. A characteristic of a pure substance that describes its
ability to change into a different substance.
_ Electron
N. The average mass of all the isotopes of an element.
O. The basic particle from which all elements are made.
_ Element
P. The force that holds two atoms together.
_ Half-life
_ Isotope
_
Q. A change in which one or more substances combine
or break apart to form new substances.
_ Ion
A. A measure of how much mater is in an object.
(protons plus neutrons)
_ Law of conservation
of mass
B. Anything that has mass and occupies space.
_ Mass number
C. The principle that the total amount of matter is
neither created nor destroyed during any chemical or
physical change,
D. A small, positively charged particle in the nucleus of the atom.
_ Matter
_
Mixture
_
Molecule
_
Neutron
E.
A characteristic of a pure substance that can be observed
without changing it into another substance.
F.
The result of an inward pull among the molecules of a liquid
that brings the molecules on the surface closer together; causes
the surface to act as if it has a thin skin.
G. A single kind of matter that is pure and has specific properties.
_
Noble gas
_
Nucleus
_
Period
_
Periodic table
_
Physical change
_
Physical property
_
Proton
_
Substance
_
Surface tension
H. An atom or group of atoms that has become
electronically charged, by gaining or losing
electrons. Causes ionic bonding between oppositely
charged atoms.
I.
A liquid’s resistance to flowing.
J.
Two or more substances that are mixed together but not
chemically combined.
K. A neutral particle made of two or more atoms bonded together
through covalent bonding.. Can be of the same element or
different elements.
L.
A small particle in the nucleus of the atom, with no electrical
charge.
M. Element in group 18 of the periodic table. They are the most
stable of all the elements, and do not easily bond with other
elements.
N. A reaction involving the particles in the nucleus of an atom
that can change one element into another element.
O. The central core of an atom with protons and usually neutrons.
_
Transition metal
_
Viscosity
_
P.
A horizontal row of elements in the periodic table.
Q. A chart of the elements showing the repeating pattern of their
properties.
R. A change in a substance that does not change its identity.
S.