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Atomic Football

Atomic Football. RULES. Divide into 5 teams. Choose a color of magnetic football player. Everyone starts on the zero yard line. As you get questions right you will advance to the goal line. Choose who will run the play. Write your answers on the dry erase boards. 5 yards.

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Atomic Football

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  1. Atomic Football

  2. RULES • Divide into 5 teams. • Choose a color of magnetic football player. • Everyone starts on the zero yard line. • As you get questions right you will advance to the goal line. • Choose who will run the play. • Write your answers on the dry erase boards.

  3. 5 yards • Which is an element and which is a compound? • SI Si I • ANSWER: Si and I are elements • SI is a compound

  4. 10 yards • Mass number • 59 • Atomic Number • 27 • Number of p, e-, n • 27, 27, 32 59 Co 27

  5. 5 yards • How do trace elements differ from non-trace elements? • ANSWER: needed in very small amounts (mg)

  6. 5 yards • How does a radioactive isotope behave differently from a stable isotope? • ANSWER: nucleus decays and gives off particles and/or energy to become more stable

  7. 5 yards • Why do atoms join to form compounds? • ANSWER: to fill outer electron shells

  8. 10 points • How do ions and isotopes differ from the form of the element on the Periodic Table? • ANSWER: ions have different numbers of e- and isotopes have different numbers of neutrons (and mass numbers)

  9. 5 yards • H – H share electrons. What type of bond would this be? • A. metallic • B. hydrogen • C. covalent • D. ionic • ANSWER: C

  10. 5 yards • What do the electrons do in ionic bonds? • ANSWER: lost or gained to form ions (charged atoms)

  11. 10 yards • Identify the solvent, solute, and solution in this picture:

  12. 10 yards ANSWER • Identify the solvent, solute, and solution in this picture: solvent • solute solution

  13. 10 yards • How does H-bonding cause ice to float? • ANSWER : H-bonds form between 4oC and 0oC • H- bonds form between the water molecules which will cause a lattice to open up the water molecules (and become less dense) • H+ ends attract O- ends of water

  14. yr

  15. 10 yards • How does H-bonding cause surface tension? • ANSWER: Water creates a “film” on its surface when H-bonding pulls the water molecules in on each other

  16. 5 yards • List the following bonds in order from strongest to weakest: • Ionic van der Waals • Covalent Hydrogen • ANSWER: Covalent Ionic • hydrogen van der Waals

  17. 5 yards • How does a buffer behave in solutions? • ANSWER: it helps the solution resist drastic changes in pH (absorbs H+ or OH- ions)

  18. 5 yards • 24 Na This is an example of: 11 • Neutral sodium C. isotope of sodium • Ion of sodium D. neutral iron ANSWER: C

  19. 10 yards • What is cohesion? Describe how the molecules line up to other water molecules. • Cohesion is the attraction of like molecules (such as water to water). • H+ ends attract to O- ends

  20. 10 yards • Identify the ions and tell if they have gained or lost electrons. • Ca+2 O F Cl-1 • ANSWER: Ca+2 lost 2 electrons Cl-1 gained 1 electron

  21. 15 yards • What does the size of the tube affect capillarity? Describe how cohesion and adhesion make it work. • The smaller the tube, the higher the water rises. • Cohesion=attraction of water to water creates a column • Adhesion of water to glass =creeps up sides of the glass

  22. 5 yards • How do acids and bases differ in the types of ions they put into solution (or take out of solution)? • ANSWER: Acids put H+ ions into solution • Bases put OH+ ions into solution (or take out H+ ions)

  23. 15 yards • What does it mean to say something is a good solvent? Why is water such a good solvent. How does it dissolve? • Dissolves a lot • Water is polar which means it has slightly + and slightly – ends. These surround the opposite ions and pull them into solution.

  24. 5 yards • Why do coastal regions have milder climates than inland regions? • ANSWER: Water is slow to change its temperature due to H-bonds need to form or break.

  25. 10 yards Matching • Strong acid • Weak acid • Neutral • Weak base • Strong base • A. pH 2 • B. pH 7 • C. pH 14 • D. pH 8 • E. pH 6

  26. 10 yards Matching ANSWERS • Strong acid A • Weak acid E • Neutral B • Weak base D • Strong base C • A. pH 2 • B. pH 7 • C. pH 14 • D. pH 8 • E. pH 6

  27. 10 yards • What is a mixture of water and undissolved materials called? Give an example. • Suspension • Salad dressing, blood

  28. 10 yards • MATCH THESE: • 1. Solvent A. substance being dissolved • 2. Solute B. substance that does the dissolving • 3. solution C. combination of the other two • ANSWER: 1-B 2-A 3-C

  29. 10 yards • For pH 6 what is the concentration of H+ ions and OH- ions? • ANSWER: H+ is 10-6 • OH- is 10 -8

  30. 5 yards • How different is pH 6 than pH 8 in strength? (how many times and is pH stronger or weaker) • ANSWER: pH 6 is 100 X’s stronger acid than pH 8

  31. 10 yards • How do the electrons of fluorine fill the shells? • ANSWER: total of 9 e- • 2,7

  32. 5 yards • At what pH does the rain have to be or below to qualify as acid precipitation? • ANSWER: pH 5.2

  33. 10 yards • Which of these form intramolecular forces (within the molecules) and which form intermolecular forces (between the molecules)? ionic van der Waals covalent H-bond ANSWER: ionic and covalent are intramolecular and van der Waals and H-bonds are intermolecular

  34. 5 yards • Is H2SO4 a: • Molecule or atom • Formula or symbol • Molecule and formula

  35. 10 yards • Draw a single bond, a double bond, and a triple bond between two carbons in two different ways. • ANSWER: see next slide

  36. 5 yards • What do you call a solution that donates a lot of H+ ions? • A. acid B. base C. salt • ANSWER: acid

  37. 10 yards • Draw NaCl as it is being dissolved by water. Include the correct orientation of water to the ions formed. • ANSWER: next slide

  38. 5 points • What are the reactants and what are the products in this chemical reaction? • C10H8 + 12 O2 ---> 10 CO2 + 4 H2O

  39. 5 points • What are the reactants and what are the products in this chemical reaction? • C10H8 + 12 O2 ---> 10 CO2 + 4 H2O REACTANTS PRODUCTS

  40. 10 yards • What are the number of valence e- and ion charges of the7 columns?

  41. 10 yards ANSWERS • What are the number of valence e- and ion charges of the 7 columns? +1 +2 share -3 -2 -1

  42. 5 yards • What do the electrons do in covalent bonds?A. lost B. gained C. share • ANSWER: share

  43. 5 yards • In salt water what is the solute and what is the solvent?ANSWER: salt is solute and solvent is water

  44. 10 yards • Which of the following are mixtures? Sand and salt water solution of water and dye CO2 ANSWER: sand and salt solution of water and dye (the other two are compounds, chemically joined)

  45. 5 yards • What are the two ions that water dissociates into? • H+ and OH-

  46. 5 yards • What is the difference between CO and Co? • ANSWER: CO is a compound and Co is an element.

  47. 5 yards • What subatomic particles make up the atom’s nucleus? • ANSWER: neutrons and protons

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