Elements, Compounds, and Reactions Vocab

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Across
  1. 3. A form of chemical bond that is characterized by the electrostatic attraction that binds oppositely charged ions together.
  2. 7. A representation of a chemical reaction using numbers and symbols of the elements to represent atoms and molecules.
  3. 8. A + X --> AX
  4. 9. A substance composed of multiple elements combined in fixed proportions
  5. 11. A form of chemical bond that is characterized by the sharing of pairs of electrons between atoms.
  6. 12. A number written below and to the right of a chemical symbol; shows the number of a specific type of atom
  7. 13. Cannot be chemically broken down or converted into other substances; defined by the atomic number
  8. 14. Expressed as 6.02 x 1023; the number of representative particles contained in one mole of a substance
  9. 15. A reaction in which a compound containing carbon and hydrogen reacts with oxygen gas to produce carbon dioxide gas and water
  10. 16. The starting substance(s) of a chemical reaction
  11. 18. The process by which one or more substances change to produce one or more different substances
  12. 19. The principle stating that matter can be changed from one form to another but cannot be created or destroyed.
  13. 20. The ending substance(s) of a chemical reaction
Down
  1. 1. A + BX --> AX + B
  2. 2. The SI unit used to describe the number of particles (atoms, molecules, ions) of a substance that are present in a sample
  3. 4. AX --> A + X
  4. 5. A group of two or more atoms bonded together by chemical forces
  5. 6. The smallest unit of an element that has all of the properties of that element containing a nucleus
  6. 10. A chemical reaction where two compounds exchange chemical bonds and switch partners
  7. 17. A number representing the number of molecules in an equation; placed in front of a chemical symbol or formula