Physical or Chemical Physical or Chemical Change? Change? Rusting iron nails Dissolving sugar into iced tea Cutting paper into smaller pieces Plastic becoming brittle when left out in the sun C. P. P. C.
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