Atoms vocab choice board

Edit Answers
123456789101112131415161718
Across
  1. 2. basic unit of matter
  2. 3. materials that are poor conductors of heat and electric current
  3. 7. a one or two letter representation of an element
  4. 9. a subatomic particle that has a positive charge and that is found in the nucleus of an atom
  5. 10. center of an atom
  6. 11. a substance that decreases the hydrogen ion concentration in a solution
  7. 17. a table that classifies elements by their physical and chemical properties
  8. 18. a charged atom
Down
  1. 1. number of protons and neutrons
  2. 2. a theory that states that all matter is composed of tiny particles called atoms
  3. 4. a subatomic particle that has a negative charge and that is found around the nucleus
  4. 5. a range of values used to express the concentration of hydrogen ions in a solution
  5. 6. a substance made up of atoms of two or more different elements joined by chemical bonds
  6. 8. the number of protons in the nucleus of an atom
  7. 12. a substance that increases the hydrogen ion concentration in a solution
  8. 13. vertical column in the periodic table
  9. 14. elements that are good conductors of heat and electric current
  10. 15. elements that have properties of both metals and nonmetals
  11. 16. a horizontal row of elements in the periodic table