Physical or Chemical Change?Physical or Chemical Change?

Rusting iron nailsDissolving sugar into iced teaCutting paper into smaller piecesPlastic becoming brittle when left

out in the sun

C.P.P.

C.

Review

4 States of MatterPhysical ChangesChange of State Chemical Changes

MixturesMixturesTwo or more substances

physically combined NOT chemically combined

The parts of a mixture can be elements, compounds or elements and compounds

MixturesMixturesNo chemical reaction takes

placeNo new substance is formedAll substances in a mixture

retain their individual properties

MixturesMixturesThey can be arranged in any

wayThe ratio of a mixtures parts

are not exact

MixturesMixturesTwo classifications of mixtures:1. HeterogeneousA mixture that is not the same

throughoutSalad, trail mix, Lucky Charms

MixturesMixtures2. HomogeneousA mixture that is the same

throughoutIts mixed so well it looks like

one substanceMilk, air, sugar cookies

Separating Mixtures Separating Mixtures

Separate the parts of the mixture

Not the linked up atomsSeparated physically or mechanically

Different Ways to Separate Different Ways to Separate MixturesMixtures

Straining

Different Ways to Separate Different Ways to Separate MixturesMixtures

Magnets

Different Ways to Separate Different Ways to Separate MixturesMixtures

Dissolving

Different Ways to Separate Different Ways to Separate MixturesMixtures

Evaporation

Different Ways to Separate Different Ways to Separate MixturesMixtures

Density