Science Review Grade 9 Exam Chemistry

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Mycroft
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191153
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Science Review Grade 9 Exam Chemistry
Updated:
2013-01-02 14:01:56
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Science Review
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Science Review for a grade 9 exam in the subtopic of Chemistry
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  1. What is the symbol for compresseed gas?
    It is a a thin capsule with a thin end on the top right hand side.
  2. What is the symbol for Flammable and Combustable Material?
    A fire over a thin black line
  3. What is the symbol for Oxidizing material?
    A circle on fire with a thin black line underneath
  4. What is the symbol for Poisionous and Ifectious Material?
    A skull and crossbones
  5. What is the symbol for Poisonous and Infectious Material causing other Toxic Effects?
    An upside down black pylon with a black dot underneath
  6. What is the symbol for Biohazardous Infectious Material?
    A circle with three wale tail like objects protruding out of the circle.
  7. What is the symbol for Corrasive Material?
    Two test tubes pouring out a substance, one a a black line and the other on a hand.
  8. What is the symbol for Dangerously Reactive Material?
    The letter R laid beneath a test tube with serval lines coming out of the top.
  9. What is the symbol for Explosive Material?
    A rocky shper shape exploding towards the top right corner
  10. What does the inverted trinagle mean?
    This symbol means yeild, as the container is dangerous
  11. What does an octangon mean?
    Thiis means stop, as the contenents inside the container is extreamly dangerous.
  12. Name the following Physical Property:

    This desribes the ability of a substance to flow
    Viscosity
  13. Name the following Physical Property:

    The term used by scientist to desribe how a substance smells
    Odour
  14. Name the following Physical Property:

    The gereral term used by scientists to desribe if a substance is solid, liquid, or gas
    State
  15. Name the following Physical Property:

    This derm describes the ability of a substance to be scratched
    Hardness
  16. Name the following Physical Property:

    This term desribes the ability to bend a substance without breaking it
    Malleablity
  17. Name the following Physical Property:

    This term desribes the ability of a substance to be hammerd into sheets
    Ductility
  18. Name the following Physical Property:

    This term descibes how much light moves through the substance
    Clarity
  19. Name the following Physical Property:

    This substance describes the shape of a solid
    Shape
  20. Name the following Physical Property:

    This term describes the ability for a substance to reflect light
    Luster
  21. Name the following Physical Property:

    This term describes the ability for electricity to travel through a substance
    Conductivity
  22. Name the following Physical Property:

    This describes the ability for a substance to break apart or shatter easily
    Brittleness
  23. What is Density?
    The amount of particles in a given space, giving the object more mass
  24. What is special about the density of 1.00
    It is the density of water, therefor objects below that density float, and objects above that density sink
  25. What is the formula for calculating density?
    Denisty = Mass over Volume
  26. How do you test for oxygen gas?
    You dip a glowing splint into a test tube, and you should see bubbles rise adn fall/exploding, and the flaming splint should ignite and then smolder out.
  27. |How do you test for gas?
    Insert a flaming splint into test tube. You should see bubbles producing gas.smoke, loud pop sound, and the splint burns out .
  28. How do you test for carbon Dioxide gas?
    Pour a small amount of liemwater into a test tube. Fill the remainder with Carbon dioxide, and then plug with a stopper. When shaken, there should be a foggy white cloud inside the tube.
  29. Name the six characteristics of metals?
    • Solid
    • Grey/Copper
    • Reflective
    • Malluable
    • High Conductivity
    • Located on the left of the Staircase in the periodic table
  30. What is the order of electrons based on the Bohr-Rugerford digram?
    • 2
    • 8
    • 8
    • 18
  31. Name and order the five scientist the discoverd and built apon atomic theory
    • Dalton
    • Thompson
    • Rutherford
    • Bohr
    • Chadwick
  32. What are Daltons discoveries and his flaw?
    • Atoms are the smallest unit of matter in the shape of Spheres
    • All atoms are the same in a given element
    • FLAW: Does not explain why electrons have electric charge
  33. What are Thompson's Experiment, discoveries and his flaw?
    • Experiment; Cathrode Ray tube Experiment
    • Discoverd that atoms have positive and negitive charges
    • FLAW:Does not explain why the atom's¬†would not implode, as opposite charges attract.
  34. What are Rutherford's experiment, discoveries and his flaw?
    • Experiment: Gold foil experiment
    • Discoverd that positive charges are located in the nucleas of the atom, and negitive charges on the outside
    • FLAW:Does nopt explain why the negitive charges did not attarct to the positive charges.
  35. What are Daltons discoveries and his flaw?
    • Discoverd that electrons have energy levels
    • FLAW; Cannot identify where the electrons are
  36. What are Chadwick's discoveries and his flaw?
    • Found isotopes in various elements
    • Idenifield that mass changes with the amount of neutron's present
  37. How do you find the number of protons?
    The number of prontons equal the atomic number
  38. How do you find the number of electrons?
    The number of electrons equal the amount of protons
  39. How do you find the atomic mass?
    The sum of the protons and neutrons
  40. How do you find the number of neutrons?
    By subtracting the atomic number from the atomic mass
  41. What is common with periods (Rows) in the periodic table?
    They all have the same amount of electron shells
  42. What is common with all the columns (Groups) in the Periodic table?
    They all have the same number of electrons on the outer shell
  43. What are compounds?
    A mixture build up of two or more elements combined
  44. What are elements?
     Molacues that come directly from the periodic table that are identical

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