MATTER MIXTURES MIXTURES Many substances in nature are

MATTER MIXTURES

MIXTURES Many substances in nature are not pure substances, instead they are mixtures.

A mixture is a combination of two or more elements and/or compounds.

Lemonade What does lemonademade taste of like? What is lemonade ? water - liquid sugar - sweet lemons - sour

AIR Nitrogen – N 2 Oxygen – O 2 Carbon dioxide – CO 2

Marble calcite dolomite and other minerals

Lemonade The mixture has properties that are similar to the components that make it up. Each component in the mixture retains its individual chemical properties.

MIXTURE Combination of elements and/or compounds element compound element Mixture of two elements ? Mixture of an element and a compound ?

Pure substance or Mixture Composed of? elements

Pure substance or Mixture Composed of? elements

Pure substance Mixture

Pure substance Mixture Element compound

Pure substance Mixture

Pure substance or mixture? mixture

Pure substance or mixture ?

Pure substance or mixture ?

Pure substance or mixture ?

Pure substance or mixture ?

Pure substance or mixture ?

Pure substance or mixture ?

Mixtures can be classified as heterogeneous mixtures or homogeneous mixtures. Hetero = different Homo = same

A heterogeneous mixture is one that doesn’t blend evenly throughout, individual substances remain distinct. granite

HETEROGENEOUS MIXTURES Pond water minerals rock water air organic matter bacteria water algae protozoa mud bacteria Oil and vinegar soil

A homogeneous mixture is a mixture that has the same composition throughout. Homogeneous mixtures are also referred to as solutions. It has a single phase.

HOMOGENEOUS MIXTURES - solutions Air: gas - gas (nitrogen, oxygen, carbon dioxide) Soda pop: gas - liquid Water, sugar, flavoring, carbon dioxide

HOMOGENEOUS MIXTURES - solutions Vinegar: liquid - liquid Kool-aid: liquid - solid (water, acetic acid) (water, sugar, kool-aid)

HOMOGENEOUS MIXTURES - solutions 14 k gold: solid - solid (gold, copper) Coins: solid - solid (copper, nickel)

HOMOGENEOUS MIXTURES - solutions 24 k gold is pure gold. 14 k gold is 14/24 or 58. 3% gold 14 k gold: solid - solid (gold, copper)

There are two types of matter: (1) Pure substance --element compound (2) Mixture--hete Combination of elements and compounds

Homogeneous or heterogeneous mixture ?

Homogeneous or heterogeneous mixture ?

Homogeneous or heterogeneous mixture ?