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Exam (elaborations)
CNIH Entrance Exam Questions with Correct Answers
Preview 2 out of 12 pages
CNIH Entrance Exam Questions with Correct Answers Atoms Smallest whole unit of matter. Protons and neutrons located in nucleus, electrons located in energy shells Element example: O2 Compound Pure substance composed of all the same type of atom. Made up of 2 or more atoms of different elements bond together in a fixed ratio- pure substances b/c of the same particles example: H2O (water) or NH3 (ammonia) Molecule Symbiosis Mutualism Formed when atoms join together- could be either an element or compound Two organisms live in close contact and at least one benefits.
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