2 Flashcards
(44 cards)
can be classified based on its composition.
They can be classified as pure substances or mixtures.
Matter
Elements and
compounds both have
___________
and exhibit specific
properties.
definite composition
can be
classified as metals,
nonmetals, and
metalloids.
Elements
General properties:
o lustrous solid at room
temperature (except Hg,
which is liquid)
o hardness and tensile strength
o ductility and malleability
o good heat/electricity
conductors
o high melting point/boiling
Metals
General properties:
o either solid or gas at room
temperature (except Br2, which
is liquid)
o brittle and dull solids
o poor conductors of heat and
electricity
o low melting and boiling points
Nonmetals
o exhibit properties of both
metals and nonmetal
o conducts heat and
electricity but not as good
as how metals act as
conductors
o semiconductors
Metalloids/Semimetals
may be categorized based on the presence of the
element carbon: organic or inorganic
Compounds
a class of compounds in which one or more carbon
atoms are bonded to other elements, most
commonly hydrogen, oxygen, or nitrogen
Organic Compounds
a class of compounds lacking carbon-hydrogen
bonds
Inorganic Compounds
o everything else except carbon
o comprise most of Earth’s crust
Inorganic compounds
are those
that contain carbon atoms
bonded to elements like H, O,
and N.
Organic compounds
are those without the element
carbon.
Inorganic compounds
are those without the element
carbon.
Inorganic compounds
electron transfer
o made up of positively
charged species (cations)
bonded to negatively
charged species (anions)
Ionic compounds
are forms of matter that have a
definite or fixed composition. They can be classified
as elements or compounds.
Pure substances
the simplest form of matter that is
made up of a single atom or more of the same kind of
atoms that are chemically bound.
element
the simplest form of matter that is
made up of a single atom or more of the same kind of
atoms that are chemically bound.
element
the simplest form of matter that is
made up of a single atom or more of the same kind of
atoms that are chemically bound.
element
may be classified as metals, nonmetals,
and metalloids.
Elements
is made up of different kinds of atoms
that are combined by a chemical reaction.
compound
may be classified based on the presence
of a particular element.
Compounds
are a class of compounds in
which one or more carbon atoms are bonded to other
elements like hydrogen, oxygen, or nitrogen.
Organic compounds
are a class of compounds that
do not have carbon-hydrogen bonds.
Inorganic compounds
Compounds may be classified based on the type of
bonding between elements.
o ionic compounds
o covalent compounds
