TAKS Review – IPC 9A <ul><li>Pick up one of each document </li></ul><ul><li>Pick up one of each  </li></ul>green red
TAKS Review – IPC 9A <ul><li>Water as the universal solvent </li></ul><ul><li>You will need a  &  card to participate! </l...
The universal solvent <ul><li>Water is called the  universal solvent .  </li></ul><ul><li>This is because water can  disso...
Structure of Water <ul><li>Water looks like this:    </li></ul>O H H Partial NEGATIVE (-) charge Partial POSITIVE (+) char...
POLAR! <ul><li>It has a  positive  end and a  negative  end. </li></ul><ul><li>This is called  polar  (like a magnet).  </...
Ionic Bonds <ul><li>Remember that  ionic  bonds are between  metals  and  nonmetals . </li></ul><ul><li>The  metal  has a ...
Ionic Bonds <ul><li>NaCl looks like this:  </li></ul>Partial POSITIVE (+) charge Partial NEGATIVE (-) charge Na Cl
Ionic Compounds in Water <ul><li>NaCl dissolved in water looks like this:  </li></ul><ul><li>Notice how the  NaCl separate...
Nonpolar Molecules <ul><li>Water dissolves other  polar  molecules. </li></ul><ul><li>It does NOT dissolve  nonpolar  mole...
Soluble in water?  <ul><ul><ul><li>Show your answer by holding up the correct color card </li></ul></ul></ul><ul><ul><ul><...
Soluble in water?  <ul><li>click here to go back to list </li></ul>yes
Soluble in water? <ul><li>click here to go back to list </li></ul>11 no
Guided Practice  <ul><li>Water is often called the &quot;universal solvent&quot; because many common substances dissolve i...
Guided Practice  <ul><li>Water is often called the &quot;universal solvent&quot; because many common substances dissolve i...
Guided Practice <ul><li>Water is a polar molecule.  This enables it to dissolve…  </li></ul><ul><ul><li>A. Rubbing alcohol...
Guided Practice <ul><li>Water is a polar molecule.  This enables it to dissolve…  </li></ul><ul><ul><li>A. Rubbing alcohol...
Guided Practice <ul><li>Which characteristic of a molecule most impacts whether it will dissolve in water? </li></ul><ul><...
Guided Practice <ul><li>Which characteristic of a molecule most impacts whether it will dissolve in water? </li></ul><ul><...
Guided Practice  <ul><li>Follow the directions on your handout </li></ul><ul><li>“ Show the Polarity of Water”  </li></ul>...
Guided Practice  <ul><li>Show the Polarity of Water </li></ul>ANSWER O H H Cl  Na v
TAKS Review - IPC  Objective 5B     Wave Interactions  <ul><li>Waves </li></ul>
2 Types of Waves <ul><li>TRANSVERSE </li></ul><ul><li>Particles in the medium move  perpendicular  (up and down) to the wa...
Guided Practice <ul><li>This wave  moves the medium in a direction perpendicular (up and down) to the direction in which t...
Guided Practice  ANSWER transverse
Properties of a Wave Transverse Wave Longitudinal (Compressional) Wave
Guided Practice   <ul><li>The distance from crest to crest or trough to trough on a transverse wave is _______________. </...
Guided Practice  ANSWER wavelength
Behavior of Waves <ul><li>Interference -  the ability of two or more waves to intersect and combine to  form a new wave  (...
Constructive vs. Destructive  Interference Waves Troughs of one wave add to troughs of another wave and crests add  to cre...
Guided Practice   <ul><li>Does this show constructive or deconstructive interference? </li></ul>Click here for answer dest...
Guided Practice  ANSWER <ul><li>The two waves are in phase in that the crests and troughs of one wave add to the crests an...
Wave Demonstration #1 Longitudinal vs. Transverse Waves
Occurs when a wave strikes a surface and bounces off of the surface <ul><li>All types of waves can be reflected. </li></ul>
The  angle of incidence  of a wave  is always equal to  the  angle of reflection. Normal  - an imaginary line perpendicula...
Refraction <ul><li>The greater the change in speed is, the  more the wave bends. </li></ul>the bending of a wave caused by...
Resonance Air The ability of an object to vibrate when it absorbs energy at its natural frequency. Natural Frequency  - a ...
Wave Demonstration #2 Resonance & Natural Frequency
Diffraction <ul><li>Example, you can hear someone talking around the corner because the waves move beyond the wall. </li><...
Polarization the process of transforming unpolarized light into polarized light Polarized sunglasses reduce blinding glare...
Wave Demonstration #3 Polarization Wave Card Sort Students work in pairs to match wave diagrams.  One baggie per pair. Cli...
Wave Card Sort  Answers 1.  Wavelength 2.  Amplitude 3.  Refraction 4.  Nodes and Antinodes 5.  Incident Ray 6.  Reflected...
Mini-TAKS Assessment Students take assessment  Review Mini-TAKS Answers Click here for assessment answers
Mini-TAKS  Answers 1.  B 2.  B 3.  C 4.  B 5.  C 6.  A 7.  A 8.  B 9.  D 10. D 11. B 12. B 13. A
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TAKS Review IPC 5B 9A

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TAKS Review IPC 5B 9A

  1. 1. TAKS Review – IPC 9A <ul><li>Pick up one of each document </li></ul><ul><li>Pick up one of each </li></ul>green red
  2. 2. TAKS Review – IPC 9A <ul><li>Water as the universal solvent </li></ul><ul><li>You will need a & card to participate! </li></ul>green red
  3. 3. The universal solvent <ul><li>Water is called the universal solvent . </li></ul><ul><li>This is because water can dissolve many things . </li></ul>
  4. 4. Structure of Water <ul><li>Water looks like this: </li></ul>O H H Partial NEGATIVE (-) charge Partial POSITIVE (+) charge Partial POSITIVE (+) charge
  5. 5. POLAR! <ul><li>It has a positive end and a negative end. </li></ul><ul><li>This is called polar (like a magnet). </li></ul><ul><li>It dissolves other polar molecules. </li></ul><ul><li>Water’s polarity helps it dissolve many substances. </li></ul><ul><li>(Do you see a pattern? We are using the word “polar” a lot! This word shows up on TAKS frequently.) </li></ul>H H O
  6. 6. Ionic Bonds <ul><li>Remember that ionic bonds are between metals and nonmetals . </li></ul><ul><li>The metal has a positive charge. </li></ul><ul><li>The nonmetal has a negative charge. </li></ul><ul><li>Because an ionic compound has a positive and negative end, it is also considered a polar molecule. </li></ul>NaCl KBr metal metal nonmetal nonmetal
  7. 7. Ionic Bonds <ul><li>NaCl looks like this: </li></ul>Partial POSITIVE (+) charge Partial NEGATIVE (-) charge Na Cl
  8. 8. Ionic Compounds in Water <ul><li>NaCl dissolved in water looks like this: </li></ul><ul><li>Notice how the NaCl separated and opposite charges are attracting. </li></ul>Na Na Na Cl Cl Cl H + H + H + H + Water breaks the bonds between the Na and Cl ions Click here to view water dissolving an ionic compound - O O -
  9. 9. Nonpolar Molecules <ul><li>Water dissolves other polar molecules. </li></ul><ul><li>It does NOT dissolve nonpolar molecules such as oil and fat . </li></ul>
  10. 10. Soluble in water? <ul><ul><ul><li>Show your answer by holding up the correct color card </li></ul></ul></ul><ul><ul><ul><li>Sugar _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>Cooking oil _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>Sand _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>An ionic compound _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>A nonpolar molecule _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>Salt _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>Wood _ click for answer _ </li></ul></ul></ul><ul><ul><ul><li>A polar molecule __click for answer _ </li></ul></ul></ul>yes no
  11. 11. Soluble in water? <ul><li>click here to go back to list </li></ul>yes
  12. 12. Soluble in water? <ul><li>click here to go back to list </li></ul>11 no
  13. 13. Guided Practice <ul><li>Water is often called the &quot;universal solvent&quot; because many common substances dissolve in water. Why do so many substances dissolve in water? </li></ul><ul><ul><li>A. There is an abundance of water on Earth. </li></ul></ul><ul><ul><li>B. The water molecule only contains two elements. </li></ul></ul><ul><ul><li>C. The water molecule has a polar structure. </li></ul></ul><ul><ul><li>D. Hydrogen and oxygen are very reactive when they are combined. </li></ul></ul><ul><ul><li>click for answer </li></ul></ul>
  14. 14. Guided Practice <ul><li>Water is often called the &quot;universal solvent&quot; because many common substances dissolve in water. Why do so many substances dissolve in water? </li></ul><ul><ul><li>A. There is an abundance of water on Earth. </li></ul></ul><ul><ul><li>B. The water molecule only contains two elements. </li></ul></ul><ul><ul><li>C. The water molecule has a polar structure. </li></ul></ul><ul><ul><li>D. Hydrogen and oxygen are very reactive when they are combined. </li></ul></ul>ANSWER
  15. 15. Guided Practice <ul><li>Water is a polar molecule. This enables it to dissolve… </li></ul><ul><ul><li>A. Rubbing alcohol </li></ul></ul><ul><ul><li>B. Mercury </li></ul></ul><ul><ul><li>C. Oil-based paints </li></ul></ul><ul><ul><li>D. Sand </li></ul></ul><ul><ul><li>click for answer </li></ul></ul>
  16. 16. Guided Practice <ul><li>Water is a polar molecule. This enables it to dissolve… </li></ul><ul><ul><li>A. Rubbing alcohol </li></ul></ul><ul><ul><li>B. Mercury </li></ul></ul><ul><ul><li>C. Oil-based paints </li></ul></ul><ul><ul><li>D. Sand </li></ul></ul>ANSWER
  17. 17. Guided Practice <ul><li>Which characteristic of a molecule most impacts whether it will dissolve in water? </li></ul><ul><ul><li>A. Size </li></ul></ul><ul><ul><li>B. Polarity </li></ul></ul><ul><ul><li>C. Ionization energy </li></ul></ul><ul><ul><li>D. Shape </li></ul></ul><ul><ul><li>click for answer </li></ul></ul>
  18. 18. Guided Practice <ul><li>Which characteristic of a molecule most impacts whether it will dissolve in water? </li></ul><ul><ul><li>A. Size </li></ul></ul><ul><ul><li>B. Polarity </li></ul></ul><ul><ul><li>C. Ionization energy </li></ul></ul><ul><ul><li>D. Shape </li></ul></ul>ANSWER
  19. 19. Guided Practice <ul><li>Follow the directions on your handout </li></ul><ul><li>“ Show the Polarity of Water” </li></ul><ul><li>click here for answer </li></ul>
  20. 20. Guided Practice <ul><li>Show the Polarity of Water </li></ul>ANSWER O H H Cl Na v
  21. 21. TAKS Review - IPC Objective 5B Wave Interactions <ul><li>Waves </li></ul>
  22. 22. 2 Types of Waves <ul><li>TRANSVERSE </li></ul><ul><li>Particles in the medium move perpendicular (up and down) to the wave direction </li></ul><ul><li>Hand motion is moving up and down </li></ul><ul><li>Water waves </li></ul><ul><li>LONGITUDINAL </li></ul><ul><li>Particles move parallel (back and forth) to the wave direction </li></ul><ul><li>Hand motion is moving back and forth </li></ul><ul><li>Compression - part where molecules are pushed together . </li></ul><ul><li>Rarefraction - part where molecules are spread apart </li></ul><ul><li>Sound waves </li></ul>
  23. 23. Guided Practice <ul><li>This wave moves the medium in a direction perpendicular (up and down) to the direction in which the wave is traveling. </li></ul>Click here for answer longitudinal transverse
  24. 24. Guided Practice ANSWER transverse
  25. 25. Properties of a Wave Transverse Wave Longitudinal (Compressional) Wave
  26. 26. Guided Practice <ul><li>The distance from crest to crest or trough to trough on a transverse wave is _______________. </li></ul>click here for answer amplitude wavelength
  27. 27. Guided Practice ANSWER wavelength
  28. 28. Behavior of Waves <ul><li>Interference - the ability of two or more waves to intersect and combine to form a new wave (composite wave). </li></ul><ul><li>Interference between waves can be constructive or destructive . </li></ul>
  29. 29. Constructive vs. Destructive Interference Waves Troughs of one wave add to troughs of another wave and crests add to crests, amplifying the new wave. Troughs of one wave overlap crests of another wave, canceling each other out in the new wave. Node - place where two waves cancel each other Constructive Deconstructive
  30. 30. Guided Practice <ul><li>Does this show constructive or deconstructive interference? </li></ul>Click here for answer destructive constructive
  31. 31. Guided Practice ANSWER <ul><li>The two waves are in phase in that the crests and troughs of one wave add to the crests and troughs of the second wave. </li></ul>constructive
  32. 32. Wave Demonstration #1 Longitudinal vs. Transverse Waves
  33. 33. Occurs when a wave strikes a surface and bounces off of the surface <ul><li>All types of waves can be reflected. </li></ul>
  34. 34. The angle of incidence of a wave is always equal to the angle of reflection. Normal - an imaginary line perpendicular to a reflective surface. Reflection Reflected Ray Incident Ray
  35. 35. Refraction <ul><li>The greater the change in speed is, the more the wave bends. </li></ul>the bending of a wave caused by a change in its speed as it moves from one medium to another. Air
  36. 36. Resonance Air The ability of an object to vibrate when it absorbs energy at its natural frequency. Natural Frequency - a special frequency at which objects vibrate if they are disturbed. All things in the universe have a natural frequency. When one tuning fork is struck with a mallet, it begins to vibrate sending out energy that is absorbed by the second one causing it to vibrate at its natural frequency.
  37. 37. Wave Demonstration #2 Resonance & Natural Frequency
  38. 38. Diffraction <ul><li>Example, you can hear someone talking around the corner because the waves move beyond the wall. </li></ul>When waves spread out past a barrier. Barrier Waves approaching Barrier Waves enter Barrier and spread out in this manner
  39. 39. Polarization the process of transforming unpolarized light into polarized light Polarized sunglasses reduce blinding glare from water, car hoods, and highways by filtering out horizontal light waves (last filter is vertical). Since last filter is horizontal, the vertical waves are being filtered out. Filters have tiny slits
  40. 40. Wave Demonstration #3 Polarization Wave Card Sort Students work in pairs to match wave diagrams. One baggie per pair. Click here for answers to card sort
  41. 41. Wave Card Sort Answers 1. Wavelength 2. Amplitude 3. Refraction 4. Nodes and Antinodes 5. Incident Ray 6. Reflected Ray 7. Crest of Wave 8. Trough of Wave 9. Destructive Interference 10. Compression 11. Rarefaction
  42. 42. Mini-TAKS Assessment Students take assessment Review Mini-TAKS Answers Click here for assessment answers
  43. 43. Mini-TAKS Answers 1. B 2. B 3. C 4. B 5. C 6. A 7. A 8. B 9. D 10. D 11. B 12. B 13. A

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