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   1. Pure Substance Contains only one type of particle. Fixed composition and properties. Examples: Distilled water, oxygen, gold.  2. Mixture Contains two or more substances mixed physically. Can be separated by physical…

Matters in our surroundings ( ch-1 ) notes what is matter: Matter is anything that has mass and occupies space.Example: Air, water, stone, etc.  Characteristics of Particles of Matter Particles of matter are very small.…