Science 51-66

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Author:
torpadilla
ID:
124044
Filename:
Science 51-66
Updated:
2011-12-16 00:38:56
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Science
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Description:
51-66
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  1. Explain what happens to the number of protons and neutrons in alpha particles, beta particles and gamma rays
    • - U- alpha 238
    • - Ni - beta 63
    • - I - beta 131
    • - Ra - alpha 226
  2. How can you tell what number is the atomic number in the periodic table?
    smaller number, whole number
  3. How can you tell which number is the atomic mass in the periodic table?
    big number, decimal
  4. List each of the periodical tables and their locations?
    • G1: alkaline metals
    • G2: alkaline earth metals
    • G3-G12: transition metals
    • G13-G16: mixed metals
    • G17: halogen
    • G18: noble gases
  5. List some chemical properties of metalloids
    -conductors of heat and electricity
  6. List some chemical properties of metals?
    • - reactivity
    • - corrosion
  7. List some chemical properties of non-metals
    • - reactive with other metals
    • - gain or share electrons
    • - poor conductors of heat and electricity
  8. List some physical properties of metalloids
    • -brittle
    • -hard
  9. List some physical properties of metals?
    • - shininess
    • - malleability (bent)
    • - ductivity (pull it out make to wire)
    • - conductivity (electric current can pass through)
  10. List some physical properties of non-metals
    • - dull
    • - brittle
  11. What are 3 subatomic particles and their charges?
    • protons
    • - positionneutrons
    • - neutralelectrons
    • - negative
  12. What are the 3 types of radioactive delay?
    • -alpha particles
    • - beta particles
    • - gamma rays
  13. What is difference between periods and groups?
    • periods - horizontal rows
    • groups - vertical columns
  14. What is the difference between the hallogens and noble gases?
    • - hallogen atoms typically share one electron when it reacts with other elements
    • - noble gases do not usually gain, lose or share electrons
  15. Who first organized the period table?
    Mendeleev

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