Chemistry Vocabulary

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Across
  1. 2. / the measure of the amount of matter in an object
  2. 5. / a physical blend of two of more components
  3. 7. metal / a Group 1A metal
  4. 10. / mixing of gases
  5. 11. / matter that has a uniform and definite composition
  6. 13. / difference between the experimental value and the accepted value
  7. 14. / tiny central core of an atom composed of protons/electrons
  8. 15. / an atom/group of atoms with a positive or negative charge
Down
  1. 1. number / the number of protons in an element
  2. 2. / anything that has mass and takes up space
  3. 3. Method / * observe, hypothesis, experiment, theory, scientific law
  4. 4. / mixtures made of 2 or more elements, at least one of them being a metal
  5. 6. property / the condition of a substance that can be observed or measured without changing the substance's composition
  6. 8. / smallest particle of an element
  7. 9. / measure of the amount of space an object takes up
  8. 12. / simplest form of matter that has a unique set of properties; they can't be broken down