Science words

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Across
  1. 3. The factor that can be changed in a experiment
  2. 5. A positively charged ion
  3. 6. The smallest part of a substance, this thing is the building block of matter
  4. 8. A Sub-Atomic particle that has a positive electrical charge
  5. 9. A compound formed from ionic bonding
  6. 11. A Sub-Atomic particle that has no electrical charge
  7. 12. How compact a substance is
Down
  1. 1. A negatively charged ion
  2. 2. A Sub-Atomic particle that has a negative electrical charge
  3. 4. A way to conduct an experiment
  4. 5. A thing containing atoms or ions or two or more elements
  5. 7. A combination of two substances that are physically combined
  6. 10. A atom with a net electrical charge from the gain or loss of one or more atoms