Atoms and Elements

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  1. 3. are the abbreviations used in chemistry for chemical elements, functional groups and chemical compounds.
  2. 5. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
  3. 6. is any property that is measurable, involved in the physical system, intensity on the object's state and behavior.
  4. 7. are a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of the opposite sign.
  5. 9. are a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
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  1. 1. is a substance whose atoms all have the same number of protons
  2. 2. are the basic unit of a chemical element.
  3. 4. a specific characteristic of a substance like an element or a compound, relating to how it can change as a result of a reaction.
  4. 8. are a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.