Power Notes Atomic Structure


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Power Notes Atomic Structure

  1. 3. Power Notes – Atomic Structure 1. All Matter 2. What are Atoms? <ul><li>Is made up of tiny particles called atoms . </li></ul><ul><li>Smallest particle into which an element can be divided and still keep its properties . </li></ul><ul><li>EX: one atom of gold still has all the properties of gold….but if you split the atom it is no longer gold. </li></ul>Class Notes Topic: ________________________ Questions/Main Ideas: Name ________________________________________ Class ________________________________________ Period ________________________________________ Date _____________________________________ Notes:
  2. 4. 3. How do we know what we know about atoms? 4. How big is the atom? <ul><li>Most of what we know was discovered throughout history from indirect observations .(without ever seeing an image) </li></ul><ul><li>The diameter is about one hundred-millionth of a centimeter (0.00000001 cm) </li></ul>
  3. 5. 7. What is a neutron? <ul><li>Found in the nucleus (center) of the atom </li></ul><ul><li>No charge </li></ul><ul><li>Mass of 1 amu </li></ul>5. What are the basic particles of an atom? There are three different types of particles ; protons , neutrons and electrons They are called subatomic particles <ul><li>Found in the nucleus (center) of the atom </li></ul><ul><li>Positively charged </li></ul><ul><li>Mass of 1 amu ( a tomic m ass u nit) </li></ul>6. What is a proton?
  4. 6. 8. What is an electron? <ul><li>Found orbiting outside the nucleus of the atom </li></ul><ul><li>Negative charge </li></ul><ul><li>Mass of 1/1840 amu </li></ul><ul><li>This particle determines how the element will bond </li></ul><ul><li>This particle also determines the charge of the atom </li></ul><ul><li>Positive </li></ul><ul><li>Only protons (+) and neutrons (no charge) in the nucleus </li></ul><ul><li>No other particles to cancel out the + particles in this space </li></ul>9. What charge does the nucleus have? Why?
  5. 7. 12. What does a model of the atom look like? <ul><li>Pg. 174 in your text. </li></ul><ul><li>Label : proton, neutron, electron & nucleus. </li></ul><ul><li>Label their charges. </li></ul><ul><li>Color each particle a different color </li></ul>10. What part of the atom take up the most space?(volume) <ul><li>The electron cloud </li></ul><ul><li>EX: If the center of an atom was the size of a bee, the atom would be as big as a football stadium </li></ul><ul><li>The nucleus (contains protons and neutrons) </li></ul><ul><li>Both subatomic particles have 1 amu </li></ul>11. Which part of the atom has the most mass?
  6. 8. 15. Are there atoms that are charged? <ul><li>Yes , they are called IONS </li></ul><ul><li>Ions will have more or less electrons than protons </li></ul><ul><li>PLASMAS contain IONS </li></ul>13. If all elements are made up of atoms, how do we know which element we are looking at? <ul><li>Each element has their own unique amount of protons </li></ul><ul><li>No two elements have the same amount of protons </li></ul><ul><li>Count the protons in the nucleus and you can identify what element you are looking at </li></ul><ul><li>Atoms found on the Periodic Table are electronically neutral . </li></ul><ul><li>They have the same # of protons (+) and electrons (-),. </li></ul><ul><li>Their charges cancel each other out. </li></ul>14. What charge do the atoms have?
  7. 9. 18. The atomic number tell you the number of? <ul><li># of Protons </li></ul><ul><li># of Electrons if the atom is neutral </li></ul>16. Periodic Table Connection <ul><li>Each element box contains all the information for finding the number of subatomic particles </li></ul><ul><li>Label the CARBON box using the key on pg. 196 </li></ul>17. How do you read the Periodic Table box? (pg. 196)
  8. 10. 21. How do you know which is the most common ISOTOPE of an element? <ul><li>Round the atomic mass </li></ul><ul><li>EX : Li 6.9 Most common Isotope = Li 7 </li></ul><ul><li>Cu 63.5 Most common Isotope = Cu 64 </li></ul>19. The atomic mass tells you the number of? <ul><li>Protons plus the number of Neutrons </li></ul><ul><li>In other words: the mass of the nucleus </li></ul><ul><li>Round the atomic mass to the nearest whole # </li></ul><ul><li>Subtract the Atomic Number from the Atomic Mass </li></ul><ul><li>Your answer represents the # of neutrons in the most common isotope of an element </li></ul>20. How do you find the # of neutrons
  9. 11. 24. Illustrate , Label & Color the 3 different forms of Hydrogen (pg. 175) *Clue: Tritium has one electron & 1 proton….how many neutrons? 22. What is an ISOTOPE? <ul><li>Same element with a different # of neutrons </li></ul><ul><li>Hydrogen 1, 2 & 3 or Protium, Deutirium and Tritium </li></ul><ul><li>All have 1 proton </li></ul><ul><li>Different # of neutrons in the nucleus </li></ul>23. What is an example of an ISOTOPE?
  10. 12. 25. How are the ISOTOPES similar? <ul><li>Same # of protons </li></ul><ul><li>Same element </li></ul>Review: Use your notes to help answer the Review questions.
  11. 13. <ul><li>Introduction to Density + Cornell Notes- Due Wednesday </li></ul><ul><li>Corrections+ Parent Signature on Test #2 – Due Friday </li></ul><ul><li>End of the Quarter is Friday. </li></ul>