How is Matter Classified?How is Matter Classified?

1.31.3

Objective/Warm-UpObjective/Warm-Up

Students will be able to distinguish Students will be able to distinguish between types of matter.between types of matter.

Convert:Convert:0.567 days to minutes0.567 days to minutes25 miles/hr to km/s25 miles/hr to km/s

Objective/Warm-UpObjective/Warm-Up

Students will be able to distinguish Students will be able to distinguish between types of matter.between types of matter.

Convert:Convert:57050 seconds to hours57050 seconds to hours320 inches/minute to yards/hour320 inches/minute to yards/hour

Objective/Warm-UpObjective/Warm-Up

Students will be able to convert units Students will be able to convert units and calculate density.and calculate density.

Convert:Convert:57050 seconds to hours57050 seconds to hours320 inches/minute to yards/hour320 inches/minute to yards/hour

MatterMatter

AtomAtom – the smallest unit of an – the smallest unit of an element that maintains the element that maintains the properties of that elementproperties of that element

Pure substancePure substance – a sample of – a sample of matter that has definite matter that has definite chemical and physical chemical and physical properties.properties.

Pure SubstancesPure SubstancesElemenElement – a substance that can’t t – a substance that can’t

be separated or broken down be separated or broken down into simpler substances by into simpler substances by chemical meanschemical means

Symbols Symbols CommonCommon

Pure SubstancesPure Substances

MoleculeMolecule – the smallest unit of – the smallest unit of a substance that keeps all of a substance that keeps all of the physical and chem. props. the physical and chem. props. of that substance – can be 1, 2 of that substance – can be 1, 2 or + atoms bonded together. or + atoms bonded together.

Monotomic and diatomicMonotomic and diatomic

Pure SubstancesPure Substances

Allotrope – 1 of multiple different Allotrope – 1 of multiple different molecular or crystalline forms of an molecular or crystalline forms of an elementelement

O and CO and CCompoundsCompounds – a substance made – a substance made

up of atoms of 2 or more diff. up of atoms of 2 or more diff. elements chemically bonded.elements chemically bonded.

CompoundsCompounds

Represented by formulasRepresented by formulasMore classifications for More classifications for

compoundscompounds

MixturesMixtures

MixtureMixture – collection of 2 or more – collection of 2 or more pure substances physically mixed pure substances physically mixed togethertogether

Proportions can varyProportions can varySweet tea or gold – different Sweet tea or gold – different

ratios in mixturesratios in mixtures

Types of MixturesTypes of Mixtures

Homogeneous mixtureHomogeneous mixture – – something that has a uniform something that has a uniform structure or composition structure or composition throughout (ex: vinegar, tea, throughout (ex: vinegar, tea, saltwater, gasoline, syrup, air)saltwater, gasoline, syrup, air)

Different components can’t be Different components can’t be seenseen

MixturesMixtures

Heterogeneous MixtureHeterogeneous Mixture – a – a mixture composed of dissimilar mixture composed of dissimilar componentscomponents

Examples – orange juice, salad, Examples – orange juice, salad, granitegranite

Difference between mixtures Difference between mixtures and compoundsand compounds

Compound = chemically combined Compound = chemically combined Properties are different from Properties are different from

componentscomponentsComponents in same ratios Components in same ratios

throughoutthroughoutMixture = physically combinedMixture = physically combined

Properties are similar to componentsProperties are similar to componentsComponents in varying ratios Components in varying ratios

throughoutthroughout