Chemistry Performance Work

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Across
  1. 4. relating to the nucleus of an atom.
  2. 8. is a list of ingredients with which something is made.
  3. 9. a substance that causes slight inflammation or other discomfort to the body.
  4. 11. having a pH of less than 7.
  5. 12. easily set on fire
  6. 14. is a very small piece of matter with a positive electrical charge that is found in the nucleus of all atoms
  7. 15. a particular kind of matter with uniform properties
  8. 19. a thing that is composed of two or more separate elements
  9. 21. having a pH of more than 7.
Down
  1. 1. father of chemistry in Islamic Civilization
  2. 2. combines with oxygen and makes things burn,
  3. 3. element with atomic number 1
  4. 5. the process of taking something ordinary and turning it into something extraordinary
  5. 6. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  6. 7. is a very small particle of matter that has a negative charge
  7. 10. a particle of matter that uniquely defines achemical element
  8. 13. a place for labor or work
  9. 16. substances that are poisonous
  10. 17. tending to cause corrosion.
  11. 18. a usually round part of most cells that is enclosed in a double membrane, controls the activities of the cell
  12. 20. electric charge of atom