chapter 5 review physical science

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Across
  1. 4. a chemical element that lacks the properties of metals
  2. 7. the electrostatic attraction between oppositely charged ions, which form when one atom transfers electrons to another
  3. 10. a substance formed when two or more different chemical elements are chemically bonded together in a fixed ratio
  4. 12. the electrons in the outermost shell of an atom that are available to form chemical bonds with other atoms
  5. 13. a type of chemical bond where electrons are shared equally between two atoms, resulting in no overall electrical charge
  6. 17. a pure substance that cannot be broken down into simpler components by chemical means
  7. 18. a mixture of two or more metals, or a metal combined with a non-metallic element, which is made by melting the components together and allowing the mixture to cool and solidify
  8. 19. the simplest and lightest element, with each atom having only one proton
Down
  1. 1. a vertical arrangement of elements with similar chemical properties
  2. 2. a substance formed by combining two or more different elements that are chemically joined in a fixed proportion
  3. 3. a type of covalent bond where electrons are shared unequally between two atoms, causing one end of the molecule to have a slightly negative charge and the other end to have a slightly positive charge
  4. 5. a chart that organizes all known chemical elements by their atomic number, arranging them in rows (periods) and columns (groups) to show trends in their properties
  5. 6. the study of how atoms and molecules are held together by chemical bonds, which can form through the sharing or transfer of electrons
  6. 8. a chemical bond that forms when two atoms share one or more pairs of electrons to achieve a stable electron configuration
  7. 9. an atom or a group of atoms that has a net electrical charge because it has either lost or gained one or more electrons
  8. 11. the smallest unit of an element that retains its chemical properties
  9. 14. the electrostatic attraction between a "sea" of delocalized electrons and the fixed, positively charged metal ions in a lattice
  10. 15. elements characterized by their luster (shininess), good conductivity of heat and electricity, and their malleability (ability to be shaped) and ductility (ability to be drawn into wires)
  11. 16. the attractive force that holds atoms together to form molecules or other structures