Unit B Crossword

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Across
  1. 2. vertical columns of elements in the periodic table
  2. 5. description of a substance that can be pounded or rolled into sheets
  3. 7. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  4. 9. change of state from a liquid to a gas
  5. 10. vertical column of elements in the periodic table;also called a family
  6. 11. description of a solid that can be stretched into a long wire
  7. 12. neutral particle in the nucleus of an atom
  8. 14. change of state from a gas to a liquid
  9. 18. anything that has mass and occupies space
  10. 20. change of state from a solid to a liquid
  11. 21. substance that helps a chemical reaction to proceed more quickly
  12. 22. atom that became electrically charged because it lost or gained electrons
  13. 23. slow chemical change that occurs when oxygen in the air reacts with a metal
Down
  1. 1. the smallest part of an element that is representative of that element
  2. 2. change of state from a liquid to a solid
  3. 3. shiny,malleable,ductile element that conducts electricity
  4. 4. change of state from a gas to a solid
  5. 6. ability of a substance to conduct electricity or heat
  6. 8. group 17 in the periodic table;the most reactive non-metals
  7. 13. catalyst involved in chemical reactions in living things
  8. 14. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  9. 15. element that has both metallic and non-metallic properties
  10. 16. pure substance that cannot be broken down into other substances;substance made up of only one type of atom
  11. 17. amount of mass in a given volume of a substance
  12. 19. chemical combination of two or more elements in a specific ratio