Matter Review

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Across
  1. 3. A negatively charged ion
  2. 4. a vertical column of elements in the periodic table
  3. 6. Attraction between molecules of the same substance
  4. 9. ____substance. Always has same chemical makeup and properties
  5. 13. forces bonding forces that hold the atoms of a molecule together
  6. 14. "Uniform" throughout, may also be called a solution.
  7. 18. easy to shape or bend
  8. 22. Substance composed of two or more elements, can be separated into simpler substances only by chemical reactions
  9. 23. bond Electrons are transferred from metal to nonmetal forming an electrostatic bond between ions
  10. 25. Fundamental substance, cannot be separated into any smaller substance by chemical reactions
  11. 26. An attraction between molecules of different substances
  12. 27. Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive
  13. 29. elements with properties that fall between those of metals and nonmetals
  14. 30. covalent Electrons shared unevenly between elements with differing electronegativity values
  15. 32. bond Electrons are shared between nonmetals and/or metalloids
  16. 33. forces forces of attraction between molecules
  17. 34. the ability of one substance to dissolve in another
  18. 37. property of metals, shiny
  19. 38. tension the uneven forces acting on the particles on the surface of a liquid
Down
  1. 1. the temperature at which a solid changes to a liquid
  2. 2. covalent Electrons are shared evenly between elements with similar electronegativity values
  3. 5. Made up of one or more pure substances that retain their properties can be separated by physical methods.
  4. 7. The ability of an object to transfer heat or electricity to another object.
  5. 8. A horizontal row of elements in the periodic table
  6. 10. An atom or group of atoms that has a positive or negative charge.
  7. 11. Has mass and takes up space. May be solid, liquid, gas, or plasma
  8. 12. ___gases, the stable elements located in Group 18 of the periodic table
  9. 15. A positively charged ion
  10. 16. Electrons on the outermost energy level of an atom, involved in bonding and chemical reactions
  11. 17. Elements that are poor conductors of heat and electric current
  12. 19. The temperature at which a liquid boils
  13. 20. mixture Not "uniform" throughout. Various properties observed throughout.
  14. 21. Elements that are good conductors of electric current and heat.
  15. 24. compound A compound that consists of metalloids/nonmetals
  16. 28. can be drawn into wires
  17. 31. metals Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
  18. 35. Easily broken; not flexible
  19. 36. compound A compound that consists metals and nonmetals