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Matter that is made up of only one kind of atom
Two or more kinds of atoms that are bonded together
Two or more kinds of different atoms that are bonded together
The basic unit of matter
All compounds are molecules,
but not all molecules are compounds.
Color, smell, boiling point, melting point, infra-red spectrum, magnetic, viscosity, density, etc…
Heat of combustion, reactivity with water, PH, etc…
MATTER
Can it be physically separated?
Homogeneous Mixture
(solution)
Heterogeneous Mixture
Compound Element
MIXTURE PURE SUBSTANCE
yes no
Can it be chemically broken down into smaller
pieces?
noyesAre the parts of the mixture hard to tell
apart?
noyes
MATTER
Can it be physically separated?
Homogeneous Mixture
(solution)
Heterogeneous Mixture Compound Element
MIXTURE PURE SUBSTANCE
yes no
Can it be chemically broken down into smaller pieces?
noyesAre the parts of the mixture hard to tell apart? noyes
Colloids Suspensions
Pure SubstancesElement– composed of one kind of atom– EXAMPLE: copper wire, aluminum foil
Pure SubstancesCompound
– composed of 2 or more atoms bonded together
– properties differ from those of individual atoms
– EXAMPLE: table salt (NaCl)
Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem
Combination of two or more pure substances that are not bonded together.
Heterogeneous Homogeneous
Mixtures
Solution– homogeneous– very small particles– particles don’t settle– EXAMPLE: rubbing alcohol
Mixtures
Heterogeneous mixture–Medium to very large particles– relatively easy to separate– EXAMPLE: candy
Mixtures
Colloid
– heterogeneous–medium-sized
particles– particles don’t
settle– EXAMPLE: milk
Mixtures
Suspension
– heterogeneous– large and small particles– particles settle– EXAMPLE: fresh-squeezed lemonade
Mixtures
Practice Time…
Examples:
–graphite
–pepper
–sugar
–paint
–juice
element
heterogeneous mixture
compound
homogeneous mixture(solution)
heterogeneous mixture
Examples:
–mayonnaise
–muddy water
–fog
–saltwater
–Salad dressing
colloid
suspension
colloid
solution
suspension
More practice…