SOLUTIONS AND MECHANICAL MIXTURES. The Particle Theory. All matter is composed of tiny particles. Size and shape vary. All particles of pure substance are exactly the same size. All particles of one substance are the same Salt particles are different from pepper particles.
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SOLUTIONS AND MECHANICAL MIXTURES
Energy is transferred between particles by moving particles hitting each other and either speeding up or slowing down.
Attraction between particles
Same particles throughout
Spaces between particles
Any substance or material that has mass and occupies space.
Matter can exist in 3 states:
solid, liquid and gas
e.g.diamond, sugar, aluminum foil
e.g. pop – mixture of liquid water, solid sugar, and CO2
mechanical mixture (heterogeneous)
e.g. salt and water
steel (iron, O2 and C)
e.g. granola, concrete