Matter Classification
Microscopic Scale
• Atom – building block of all matter
• Molecule – two or more atoms chemically bonded together
Microscopic Scale
AtomThe smallest
unit of an element
Ex) Na, Mg, Fe, Ar, Zn, Cu
Moleculeof elementSame element
chemically bonded
Ex) H2, O2, N2, F2, Cl2, Br2, I2, S8
Moleculeof
compoundDifferent elements chemically bonded
Ex) H2O, CO2, HCl, CH2O
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NO
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NO
Matter – material that has mass and takes up space
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NO
Pure Substances– can’t be separated by physical means (heating, filtering, sorting, etc.)
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NO
Mixtures – contains more than one substance
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NOElement – unique type of atom; on the Periodic Table
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NO
Compound – contains more than one element; atoms are chemically bonded together
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NOHomogeneous Mixture – is the same throughout; each sample is identical
Matter
Pure Substances
Mixtures
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
Can it be separated by physical means?
Can it be separated through chemical reactions?
Can it be separated easily?
YES
YESYES
NO
NO NOHeterogeneous Mixture – is not the same throughout; samples are different
Practice Classifying
• Put the following objects in the appropriate category:
Element Compound Homogeneous Heterogeneous
Mixture MixtureLithium (Li)
Gold (Au)Detergent
GatoradeYour Body
Hydrogen (H2)
Hydrochloric Acid (HCl)
Root Beer
Raisin Bran
Oreos
Baking Soda (NaHCO3)
Formaldehyde (CH2O)
Practice Classifying-Answers
• Put the following objects in the appropriate category:
Element Compound Homogeneous Heterogeneous Mixture Mixture
Lithium (Li)
Gold (Au)
Detergent
Gatorade Your Body
Hydrogen (H2)
Hydrochloric Acid (HCl)
Root Beer
Raisin Bran
OreosBaking Soda (NaHCO3)
Formaldehyde (CH2O)
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