Classification Of Matter (Page 2 of 4) in pdf

Classification Of Matter Page 2

Pure Substances: Elements

• Matter that ______________ be broken down into simpler substances under

normal lab conditions

• Contains only _________ kind of atom

• Draw pictures below of a(n):

o Atom! !

Molecule (two or more atoms of the same element)

• Elements (symbols): Na, Au, C

• Where can you ﬁnd a list of all the elements?

_______________________________________________________________

Pure Substances: Compounds

• Can be __________________ into elements

• Composed of two or more elements that combine in a __________________

reaction

• Combine in a __________________ proportion

• Examples: NaCl, H

O, Fe(NO

)

Which are elements and which are compounds?

• Compounds contain more than one element. They always have the same

composition, regardless of source (law of constant composition; law of deﬁnite

proportions).

Mixtures

• A blend or combination of two or more __________________

• __________________ chemically combined

• Composition of mixtures is __________________

Mixtures: Heterogeneous

• A __________________ mixture is one that does not blend smoothly

throughout and in which the individual substances remain distinct.

• Mixture with __________________ different parts.

o Examples:

 __________________

Mixtures: Homogeneous

• A __________________ mixture has constant composition throughout; it

always has a single phase.

• Mixture with _____ __________________ different parts.

o Sea water: __________________

Air: __________________

Classification Of Matter Page 2