matter, subtances, and mixtures Flashcards
(32 cards)
what is matter
a representation of all substances that have mass and volume
what is a substance
matter that has the same properties and composition
what is a substance made of
tiny particles called atoms
what are the two types of substances
elements and compounds
what are elements composed of
same kind of atoms
what are elements considered to be
metals and non metals
where are metals on the periodic table
left
where are non metals on the periodic table
right
what are compounds made of
two or more atoms that are chemically combined
what are compounds considered to be
molecules or salts
what are molecules made of
all non metal atoms
what are salts made of
metals and non metal atoms
what represents a compound
a chemical formula
where are chemical symbols used
in place of an element name
how many letters are in a chemical symbol
one, two, or three
what is a mixture
matter that contains more than one kind of matter with no chemical reaction
what are the two types of mixtures
heterogeneous and homogeneous
what is a heterogeneous mixture
a mixture where the particles are not uniform throughout and can be easily separated
what is a homogeneous mixture
a mixture where the particles are uniform throughout and cannot be easily separated
a solution is a homogeneous mixture
true
what are the two types of changes matter can undergo
physical and chemical
what is a physical change
the same substances are present before and after change occurs and its only a change of state
what does malleble mean
pounding
what does ductile mean
pulling
