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CHEMICAL INTERACTIONS INVESTIGATION 3: PARTICLES

CHEMICAL INTERACTIONS INVESTIGATION 3: PARTICLES. KEY CONCEPTS. MATTER IS MADE OF PARTICLES (atoms) EVERY SUBSTANCE IS DEFINED BY A UNIQUE PARTICLE GAS IS MATTER - IT HAS MASS AND OCCUPIES SPACE (air is matter made of particles). “air” is made up of particles. KEY CONCEPTS.

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CHEMICAL INTERACTIONS INVESTIGATION 3: PARTICLES

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  1. CHEMICAL INTERACTIONS INVESTIGATION 3: PARTICLES

  2. KEY CONCEPTS • MATTER IS MADE OF PARTICLES (atoms) • EVERY SUBSTANCE IS DEFINED BY A UNIQUE PARTICLE • GAS IS MATTER- IT HAS MASS AND OCCUPIES SPACE (air is matter made of particles) • “air” is made up of particles

  3. KEY CONCEPTS • GASES ARE COMPOSED OF WIDELY SPACED INDIVIDUAL PARTICLES IN CONSTANT MOTION • THERE IS NOTHING BETWEEN GAS PARTICLES EXCEPT SPACE (the particles in air don’t touch each other).

  4. KEY CONCEPTS • GAS COMPRESSES WHEN FORCE IS APPLIED; GAS EXPANDS WHEN FORCE IS WITHDRAWN (air that is forced into a smaller space is compressed air) • DURING COMPRESSION AND EXPANSION, THE NUMBER AND CHARACTER OF PARTICLES IN A SAMPLE OF GAS DO NOT CHANGE, THE SPACE BETWEEN THE PARTICLES DOES CHANGE.

  5. KEY CONCEPTS • WHEN THE FORCEHOLDING AIR IN A SMALLER SPACE IS REMOVED, THE AIR EXPANDS- TAKES UP MORE SPACE.

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