Science: ESSENTIAL TERMS

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Across
  1. 2. Made up of one or more of the same atoms
  2. 7. A mixture of 2 or more elements
  3. 10. Releases heat
  4. 11. One of the horizontal rows in the periodic table
  5. 14. The number of protons in the nucleus of an atom
  6. 15. The electrons on the outer ring of the atom
  7. 17. A negatively charged particle
  8. 18. Absorbs heat
  9. 20. Something that acts like a metal and a nonmetal
  10. 21. What is on the left side of a chemical equation.
  11. 22. The one to three numbers that stand for an element
  12. 23. Made of electrons, protons, and Jimmy Neutrons
Down
  1. 1. A neutrally charged particle
  2. 3. How much one atom of an element weighs
  3. 4. The core of an Atom
  4. 5. What is left in the aftermath of a chemical reaction
  5. 6. The law that new atoms can not be created or destroyed
  6. 8. A column of elements in the periodic table
  7. 9. A gas that does not want to bond
  8. 12. A positively charged particle
  9. 13. The creator of the periodic table
  10. 16. The complete opposite to a metal
  11. 19. Is conductive, malleable, and ductile