Unit B Fandy Liu 9S

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Across
  1. 2. positively charged particle in the nucleus of an atom
  2. 3. vertical column of elements in the periodic table; elements in a family all have similar chemical properties; also called a family
  3. 5. Workplace Hazardous Materials Information System; a system of easy-to-see warning symbols on hazardous materials
  4. 8. change of state from a liquid to a gas
  5. 9. change of state from a gas to a solid
  6. 11. change of state from a liquid to a solid
  7. 12. invisible negatively charged particle that orbits the nucleus of an atom
  8. 13. anything that has mass and occupies space
  9. 14. number of protons in the nucleus of one atom of an element
  10. 15. change in the appearance or state of a substance that does not change the composition
  11. 19. the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
  12. 20. property that describes the physical appearance and composition of a substance
  13. 21. positively charged centre of an atom;contains protons and neutrons
  14. 24. change of state from a solid to a gas or from a gas to a solid
Down
  1. 1. mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom; measured in atomic mass units (amu)
  2. 4. horizontal row of elements in the periodic table
  3. 6. neutral particle in the nucleus of an atom
  4. 7. change of state from a gas to a liquid
  5. 10. substance made of only one kind of matter, which has a unique set of properties
  6. 11. vertical column of elements in the periodic table; elements in a family all havesimilar chemical properties; also called a group
  7. 16. refers to the three common states in which matter can exist: solid, liquid, and gas
  8. 17. change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
  9. 18. orbit of electrons around the nucleus of an atom
  10. 22. change of state from a solid to a liquid
  11. 23. characteristic that describes a particular substance (e.g., color, luster, melting point,crystal shape, solubility, density)