Chpt 16 science vocab

  1. Molecule
    • neutral particle formed when atoms share electrons
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  2. Nucleus
    • center fo the atom that contains the protons and neutrons
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  3. Subscript
    • A number that is written  a little below of text. Shows the number of particular element in a chemical formula.
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  4. coefficient
    Image Upload 4The number in front of some chemical formulas. An example  would be the 3 in 3 NaCl
  5. Compound
    • Pure substance contining 2 or more elements that are chemically bounded.
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  6. chemical formula
    • shows the kind and number of ataoms in a formula
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  7. electron cloud
    space around the nucleus where electrons can be foundImage Upload 7
  8. electron dot diagram
    • symbol for the element surrounded by as many dots as there are electrons in its outer level
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  9. energy levels
    • different areas in the electron cloud where an electron can be found
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  10. Ion
    • an atom that is no longer neutral because it has gained or lost an electron
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  11. chemical bond
    force that holds two atoms togetherImage Upload 11
  12. covalent bonds
    • when atoms share electrons
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  13. double bond
    • when 2 pairs of electrons are involved in a covalent bond
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  14. ionic bond
    • Attraction which holds ions close together.  Bond where electrons are gained or lost
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  15. Metallic Bonds
    WHen metal atoms share their pooled neutrons
  16. Polar Bond
    Bond in which electrons are shared unevenly
  17. Triple bond
    • When 3 pairs of electrons are shared by 2 atoms
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  18. Valence Electrons
    • The electrons in the outer energy level. The electrons that determine how elements react
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  19. Polar Molecule
    Molecule where electrons are shared unevenly
  20. Nonpolar Molecular
    Molecule where electrons are shared evenly
Card Set
Chpt 16 science vocab
Chapter 16 vocab