unit 3 vocabulary

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Across
  1. 3. A compound that contains water molecules loosely bound to its structure.
  2. 4. The ratio of the number of moles of one substance in a chemical reaction to the number of moles of another substance.
  3. 6. The simplest whole number ratio of atoms in a compound.
  4. 8. A type of chemical reaction where one element replaces another in a compound.
  5. 12. A chemical reaction where a single compound breaks down into two or more simpler substances.
  6. 13. The actual number of atoms of each element in a molecule of a compound.
  7. 14. A solid that forms from a solution during a chemical reaction.
  8. 16. The mass of one mole of a substance, usually expressed in grams per mole (g/mol).
  9. 17. The substances that undergo a chemical reaction and are consumed in the process.
  10. 18. The substances that are formed as a result of a chemical reaction.
  11. 19. A number placed in front of a chemical formula in a balanced chemical equation to indicate the number of molecules or moles of that substance.
  12. 20. A process that involves the rearrangement of atoms to form new substances.
Down
  1. 1. A chemical reaction where two or more substances combine to form a new compound.
  2. 2. A chemical reaction where a substance reacts with oxygen to produce heat and light.
  3. 5. A symbolic representation of a chemical reaction, showing the reactants and products.
  4. 7. of Conservation of Matter The principle that matter cannot be created or destroyed in a chemical reaction, only rearranged.
  5. 9. The number of atoms, ions, or molecules in one mole of a substance, approximately 6.022 x 10^23.
  6. 10. A type of chemical reaction where two compounds exchange ions to form two new compounds.
  7. 11. The percentage by mass of each element in a compound.
  8. 15. A unit of measurement used in chemistry to express the amount of a substance.