SCIENCE

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Across
  1. 3. he amount of space in a object
  2. 6. a table that has all the chemical elements on it
  3. 8. when you melt ice it becomes a ?
  4. 10. They are parts of the periodic table
  5. 13. This is also known as the Kinetic Theory
  6. 14. The smallest particle
  7. 16. Electrons have a ? charge
  8. 17. The middle of of the atom
  9. 18. The degree of heat.
  10. 19. below 0C
  11. 23. A sign of a chemical change.
  12. 25. Protons have a ? charge
  13. 26. a stage in the process of changing
  14. 27. Has a positive charge and is part of a atom
  15. 29. Is part of a atom has a neutral charge.
Down
  1. 1. A change when a new substance is formed and you can't change it back to what you started with.
  2. 2. A group of atoms bonded together
  3. 4. A change when no new substance is formed and you can get back to what it was before.
  4. 5. Atoms and molecules are in ?
  5. 7. point The temperature at which liquid boils.
  6. 9. number of protons is called the ?
  7. 11. heat causes cold stuff and other things to do this.
  8. 12. A neutron has a ? charge
  9. 15. The number of protons and neutrons in the nucleus.
  10. 20. Is part of a atom has a negative charge.
  11. 21. 2,000 grams can also be 2 ?
  12. 22. a liquid evaporates it turns into a ?
  13. 24. A thing with two or more different elements.
  14. 28. when you freeze water it turns from a liquid to a ?