Atoms: They are Inside All Substances
In Nature: Water, Metals, Even the Air That We Breathe is Made Up of Atoms
Simple Substances: Formed by Only One Element
Compound Substances: Formed by Two or More Elements Joined Together
Mixtures: Two or More Types of Particles Mixed Together but Not Joined with Each Other
Molecular: Independent Particles That Can Get Closer or Separated from Other Molecules
Crystals: Formed by Large Groups of Atoms Joined Together Which Have Regular Fixed Positions
Homogeneous: The Entire Substance or Object Has the Same Look and Properties Throughout
Heterogeneous: There Are Parts with Different Looks and Properties
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