Page 10 - Surviving Chemistry BFF Homework Helper and Test Prep Preview

Atoms

X Y

Elements Compounds Mixtures

X XY X and XY

Y 2 Y 2X Y 2 and Y 2X

Y2 X2Y

Matter

Pure Substances Mixtures

Elements Compounds Homogeneous Heterogeneous

Substances in a mixture can be separated only by physical methods.
(Ex: crystallization, distillation, filtration, etc.).

Methods vary based on the physical properties of the substances.

Evaporating off liquid components of a solution,

leaving behind the solid components.
Depends on boiling point differences.

Boiling off and collecting liquids of a mixture
from lowest boiling point to highest boiling point.
Depends on boiling point differences.

Separating components of an ink or a gas mixture by
how fast they travel through a stationary phase.

Paper Chromatography Depends on polarity differences.

Gas Chromatography Depends on molecular mass differences.
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