Classification of Matter

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Classification of Matter. Pure Substances  every sample has the same characteristic properties & composition  ELEMENTS  one type of atom Ex: iron.

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Presentation transcript:

Classification of Matter C.4.D classify matter as pure substances or mixtures through investigation of their properties. Classification of Matter

Table of Contents Slide 3 Composition of Matter Slide 4 & 5 Pure Substances Slide 6 Mixtures Slide 7 Homogeneous Mixtures Slide 8 Heterogeneous Mixtures Slide 9-11 Mixture Separation Techniques Slide 12 Review Slide 13 Practice

Composition of Matter

Pure Substances every sample has same: are made of: characteristic properties composition are made of: one type of atom: element Ex: iron, gold, oxygen 2 or more types of atoms: compound Ex: salt, sugar, water

Which are pure substances?

Mixtures blend of 2 or more types of matter each component keeps its own identity and properties the components are only physically mixed can be separated using physical means properties of the mixture are a combination of the component’s properties

Homogeneous Mixtures also called solution uniform in composition no visible parts Ex: vinegar clear air salt water brass

Heterogeneous Mixtures not uniform in composition visible parts Ex: soil concrete blood chocolate chip cookies sand in water iced tea with ice

Mixture separation Techniques Filtration- solid part is trapped by filter paper and the liquid part runs through the paper Vaporization- where the liquid portion is evaporated off to leave solid

Mixture separation Techniques Decanting- when liquid is poured off after solid has settled to bottom Centrifuge- machine that spins a sample very quickly so that components with different densities will separate

Mixture separation Techniques Paper Chromatography- used to separate mixtures because different parts move quicker on paper than other

Review

Practice Determine whether each of the following is element, compound, homogeneous mixture or heterogeneous mixture. air zinc chlorine granite aluminum sugar in water blood sucrose stainless steel sodium chloride brass whole milk apple table salt soft drinks vinegar concrete sodium baking soda (NaHCO3) gravel