Science Final

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Anonymous
ID:
153206
Filename:
Science Final
Updated:
2012-05-10 01:07:45
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science
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Science Final
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  1. How do you find the average speed.
    average speed (in m/s) = total distance (in m) over total time (in s)

    v=d/t
  2. What makes an atom stable?
    Elements with the exact number of electrons to fill their outermost energy level are stable, or unreactive.
  3. What is needed to break bonds in a chemical reaction?
    The rearrangement of atoms.
  4. What makes a balanced chemical equation?
  5. What is a homogenous mixture?
    two or more substances that are evenly mized on the atomic level, but are not bonded together
  6. Do strong acids have lower pH?
  7. What is a neutral solution?
    d
  8. What is a pH of antacids?
    d
  9. Who discovered the orbits of the planets that move around the Sun?
    d
  10. How is matter classified?
    f
  11. Nonmetals are _____ _____ _____ _____?
    f
  12. A solution of 13 on the pH scale is _____.
    f
  13. What is elastic force?
    force exerted by a material when it is stretched or compressed
  14. What is a polymer and how would it look if drawn as a chemical equation?
    a covalent compound made up of many, small, repeating units linked together in a chain
  15. What is an AU?
    an astronomical unit is the average distance from Earth to the Sun

    One AU equals 149,600,000 km.
  16. Mercury is _____ planet from the Sun.
    f
  17. Understand the phases of the moon.
    f
  18. What type of star is the Sun?
    f
  19. What is an aqueous solution?
    f

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