Modern Chemistry- Chapter 1 Review
It is easy to determine whether a substance is a metal if the substance is
a good electrical and heat conductor
a chemical change occurs when
a leaf changes color in the fall
if a mixture is uniform in composition, it is said to be
homogeneous
metalloids are often
semiconductors
an atom is
the smallest unit of matter that maintains its chemical identity
NOT ON MIDTERMS
NOT ON MIDTERMS
SKIP
SKIP
a mixture is
a blend of any two or more kinds of matter, as long as each maintains its own unique properties
a nonmetal is usually
a good conductor
a homogeneous mixture is also called
a solution
a compound is
a substance, made of two or more atoms that are chemically bonded, that can be broken down into simpler, stable substances
which of the following is an example of a homogeneous mixture
air
a solid substance is
always the same shape regardless of its container
a chemical can be defined as
any substance that has a definite composition
plasma is the fourth state of matter. in the plasma state
atoms lose electrons
which of the following is not a physical change
burning
organic chemistry is the study of
carbon containing compounds
which of the following is an intensive property of matter
density
a physical change occurs when a
glue gun melts a glue stick
which of the following is an example of a heterogeneous mixture
granite
the vertical columns on the periodic table are called
groups
the liquid state of matter can be described as
having a definite volume but not a definite shape
if a mixture is not uniform throughout, it is called
heterogeneous
which of the following is not a chemical change
igniting
what happens to the energy in a substance when it changes state
it changes form, but is neither destroyed nor increased
matter includes all of the following except
light
A state of matter in which a material has no definite shape but has a definite volume is the ____ state.
liquid
technological developments often occurs
long after the basis research is complete
a measure of quantity of matter is
mass
a true statement about mass is that
mass is determined by comparing the mass of an object with a set of standard masses that are part of a balance
inorganic chemistry is the study of
non-carbon related compounds
all known chemical elements are organized into groups based on similar chemical properties in the
periodic chart
the horizontal rows on the periodic table are called
periods
Nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are called the
reactants
the two most important properties of all matter are
taking up space and having mass
biochemistry is the study of
the chemistry of living things
basic research is usually performed
to gain knowledge
applied research is carried out in order to
to solve a particular problem
noble gases are in Group 18, and are best known because they are
unreactive
under ordinary conditions of temperature and pressure, the particles in a gas are
very far from one another
which of the following is an extensive property of matter
volume