Unit 7.4 to 7.6

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Across
  1. 4. A chemical _____ has symbols and numbers that tell the scientist which atoms are present and exactly how many in a substance.
  2. 6. The substances present before a reaction takes place.
  3. 8. The chemical combination of a metal and a nonmetal
  4. 10. the reaction between an acid and a base, the chemical combination is acid + base --> salt + water
  5. 11. A chemical _____ is the representation of a chemical reaction in words or symbols, this shows the scientist what happens over time during a chemical change.
  6. 14. A substance that increases the hydroxide ions in a solution
  7. 15. A chemical reaction that releases energy by light or heat
  8. 16. A composition of two or more substances that are not chemically combined
  9. 17. A mixture of 2 or more substances that are the same throughout
Down
  1. 1. The name for the substance that is dissolved in a solution
  2. 2. The substances formed as a result of a chemical reaction.
  3. 3. the law of _____ of mass states: matter can neither be created nor destroyed in a chemical reaction.
  4. 5. A substance that increases the number of hydronium ions in a solution
  5. 7. What is known as the universal solvent?
  6. 9. The amount of substance (solute) dissolved in a given volume of solution (solvent)
  7. 11. A chemical reaction that absorbs energy, usually in the form of heat
  8. 12. The substance that dissolves the solute
  9. 13. A chemical _____ is the process by which atoms are rearranged chemically to form new substances, chemical bonds can be broken, formed, or both.