3 Possible Shapes

More Sides = More Dangerous

7 safety symbols can go in any of the 3 shapes

Phase Changes:

• Melting

• Freezing

• Condensation

• Evaporation

• Sublimation

• Deposition

ELEMENTS COMPOUNDS HETEROGENEOUS HOMOGENEOUS

Hydrogen, Gold,

Oxygen, Nitrogen,

Silver, Sodium,

Argon, Helium,

Copper, Mercury

Water

Carbon Dioxide

Sugar

Acetic Acid

Methane

Mixtures where

you can clearly

see the different

components

Mixtures that

appear to look

like one

substance