chemisrty

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Across
  1. 2. repeated or long term exposure that can cause sensitivity
  2. 4. reaction that requires absorption of energy or heat from an external source for reaction to occur
  3. 6. hydroxy acid, abbreviates AHAs; acids derived from plants (mostly fruit) that are often used to exfoliate skin
  4. 8. ,unstable mixtures of undissolved particles in a liquid
  5. 9. the smallest chemical components (often called particles )of an element; structures of the element that have the same propertied of the element
  6. 12. in water,
  7. 13. a contraction of surface active agents ; substances that allow oil and water to mix
  8. 16. in- oil emulsion, abbreviated W/O emulsion; water droplets emulsified in oil
  9. 18. -reduction,
  10. 22. O/W emulsion; oil droplets emulsified in water
  11. 23. ,liquids that are mutually soluble , meaning that they can be mixed together to form a stable solution
  12. 24. agent ,a substance that adds hydrogen to a chemical compound or subtracts oxygen from the compound
  13. 25. an atom or a molecule that carries an electrical charge
Down
  1. 1. capable of combining with or attracting water( water -loving)
  2. 3. reaction that releases a significant amount of heat
  3. 4. molecules ,also know as compounds ; a chemical combination of two or more atoms of different elements in definite fixed properties
  4. 5. change, a change in a chemical composition or makeup of a substance
  5. 7. reaction,
  6. 10. know as redux ,a chemical reaction in which the oxidizing agent is reduced ( by losing oxygen) and the reducing agent is oxidized (by gaining oxygen)
  7. 11. , an ion with a negative charge
  8. 14. oxidation of a substance accompanied by the production of heat
  9. 15. reaction,
  10. 17. a substance that dissolves solutes and make a solution
  11. 19. subatomic particles with negative charge
  12. 20. a solution having a pH below seven
  13. 21. having an affinity for an attraction to fat and oils ( oil - loving)