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- 1. Open-ended30 seconds1 pt405000
- 2. Open-ended30 seconds1 pt0.0098
- 3. Open-ended30 seconds1 pt39.999999
- 4. Open-ended30 seconds1 pt13.00
- 5. Open-ended30 seconds1 pt80000089
- 6. Open-ended30 seconds1 pt55430.00
- 7. Open-ended30 seconds1 pt0.000033
- 8. Open-ended30 seconds1 pt620.03080
- 9. Open-ended30 seconds1 ptHow do you convert a regular number into scientific notation?
- 10. Open-ended30 seconds1 ptA study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment the number of surviving fish are surveyed. What is the independent variable?
- 11. Open-ended30 seconds1 ptA study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment the number of surviving fish are surveyed. What is the dependent variable?
- 12. Open-ended30 seconds1 ptA study is being done to test the effects of habitat space on the size of fish populations. Different sized aquariums are set up with six goldfish in each one. Over a period of six months, the fish are fed the same type and amount of food. The aquariums are equally maintained and cleaned throughout the experiment. The temperature of the water is kept constant. At the end of the experiment the number of surviving fish are surveyed. What are the controls?
- 13. Open-ended30 seconds1 ptTo determine if the type of agar affects bacterial growth, a scientist cultures E. coli on four different types of agar. Five petri dishes are set up to collect results: One with nutrient agar and E. coli One with mannitol-salt agar and E. coli One with MacConkey agar and E. coli One with LB agar and E. coli One with nutrient agar but NO E. coli What is the independent variable?
- 14. Open-ended30 seconds1 ptTo determine if the type of agar affects bacterial growth, a scientist cultures E. coli on four different types of agar. Five petri dishes are set up to collect results: One with nutrient agar and E. coli One with mannitol-salt agar and E. coli One with MacConkey agar and E. coli One with LB agar and E. coli One with nutrient agar but NO E. coli What is the dependent variable?
- 15. Open-ended30 seconds1 ptTo determine if the type of agar affects bacterial growth, a scientist cultures E. coli on four different types of agar. Five petri dishes are set up to collect results: One with nutrient agar and E. coli One with mannitol-salt agar and E. coli One with MacConkey agar and E. coli One with LB agar and E. coli One with nutrient agar but NO E. coli What are the controls?
- 16. Open-ended30 seconds1 ptWhat is the best method of contacting help in an emergency in your community?
- 17. Open-ended30 seconds1 ptWhat should you do if you spilled a tiny amount of hydrochloric acid on your hand?
- 18. Open-ended30 seconds1 ptDescribe a possible danger than can occur if you put food, soda, coffee, pencil erasers, etc. in your mouth while conducting your chemistry experiments?
- 19. Open-ended30 seconds1 ptWhat information is given on a Safety Data Sheet?
- 20. Open-ended30 seconds1 ptList optimum clothing, shoes, jewelry, and hair arrangement for your chemistry labs.
- 21. Open-ended30 seconds1 ptList the contents from your first aid kit that you will use to treat a minor cut.
- 22. Open-ended30 seconds1 ptList the contents from your first aid kit that you will use to treat a minor burn.
- 23. Open-ended30 seconds1 ptMost of the chemicals included in your Introductory Chemistry Lab kit can be discarded down a drain with copious amounts of water. Describe a situation in which you would need to neutralize (pH 7) a chemical before discarding down a drain.
- 24. Open-ended30 seconds1 ptWhy should one add acid to water rather than add water to acid when preparing solutions?
- 25. Open-ended30 seconds1 ptif a stronger solution of sodium bicarbonate was used in beaker B, would it require more or less acetic acid to neutralize and why?
- 26. Open-ended30 seconds1 ptIf a weaker solution of sodium bicarbonate was used in beaker B, would that solutionrequire more or less acetic acid to neutralize it and why?
- 27. Open-ended30 seconds1 ptPb(SO4)2
- 28. Open-ended30 seconds1 ptBe(HCO3)2
- 29. Open-ended30 seconds1 ptMn2(SO3)3
- 30. Open-ended30 seconds1 ptAl(CN)3
- 31. Open-ended30 seconds1 ptMn(CIO3)2
- 32. Open-ended30 seconds1 ptMg(CIO2)2
- 33. Open-ended30 seconds1 ptBaSo4
- 34. Open-ended30 seconds1 ptKI
- 35. Open-ended30 seconds1 ptNaCl
- 36. Open-ended30 seconds1 ptMgCl2
- 37. Open-ended30 seconds1 ptNa3N
- 38. Open-ended30 seconds1 ptCoCl2
- 39. Open-ended30 seconds1 ptLithium bromide
- 40. Open-ended30 seconds1 ptLead (II) oxide
- 41. Open-ended30 seconds1 ptChromium (III) sulfate
- 42. Open-ended30 seconds1 ptPotassium chloride
- 43. Open-ended30 seconds1 ptSodium hypochlorite
- 44. Open-ended30 seconds1 ptLead (II) iodide
- 45. Open-ended30 seconds1 ptSodium hydroxide
- 46. Open-ended30 seconds1 ptMagnesium sulfate
- 47. Open-ended30 seconds1 ptChromium (III) nitrate
- 48. Open-ended30 seconds1 ptBarium sulfate
- 49. Open-ended30 seconds1 ptCobalt (III) chloride
- 50. Open-ended30 seconds1 ptIron (III) bromide
- 51. Open-ended30 seconds1 ptNO2
- 52. Open-ended30 seconds1 ptCBr4
- 53. Open-ended30 seconds1 ptSeS2
- 54. Open-ended30 seconds1 ptN2O
- 55. Open-ended30 seconds1 ptP4O10
- 56. Open-ended30 seconds1 ptSO2
- 57. Open-ended30 seconds1 ptCO
- 58. Open-ended30 seconds1 ptSF6
- 59. Open-ended30 seconds1 ptHI
- 60. Open-ended30 seconds1 ptH2S
- 61. Open-ended30 seconds1 ptSeO3
- 62. Open-ended30 seconds1 ptNO
- 63. Open-ended30 seconds1 ptNitrogen trifluoride
- 64. Open-ended30 seconds1 ptHydrogen chloride
- 65. Open-ended30 seconds1 ptOxygen difluoride
- 66. Open-ended30 seconds1 ptDiselenium hexasulfide
- 67. Open-ended30 seconds1 ptDihydrogen dioxide
- 68. Open-ended30 seconds1 ptMethane
- 69. Open-ended30 seconds1 ptSulfur trioxide
- 70. Open-ended30 seconds1 ptHydrogen sulfide
- 71. Open-ended30 seconds1 ptCarbon dioxide
- 72. Open-ended30 seconds1 ptPhosphorus pentachloride
- 73. Open-ended30 seconds1 ptDinitrogen tetroxide
- 74. Open-ended30 seconds1 ptHydrogen Bromide
- 75. Open-ended30 seconds1 ptWhy is it important to be accurate in all your measurements in this experiment?
- 76. Open-ended30 seconds1 ptList the measurements you will take in this experiment.
- 77. Open-ended30 seconds1 ptWhat chemical wastes are produced in this reaction?
- 78. Open-ended30 seconds1 ptDiscuss how you could experimentally determine the chemical formula of a compound.
- 79. Open-ended30 seconds1 ptWhat is the mass of the gluconate? Include your calculations
- 80. Open-ended30 seconds1 ptDetermine the number of moles of copper in the copper gluconate using your results.
- 81. Open-ended30 seconds1 ptWhat is the chemical formula of copper gluconate?
- 82. Open-ended30 seconds1 ptWhat is one difference between qualitative and quantitative analysis?
- 83. Open-ended30 seconds1 ptWhat three physical properties are often analyzed to identify covalent compounds?
- 84. Open-ended30 seconds1 ptUse Table 1 (from the lab module) to determine which metal ion would be identified as the reactant if a reaction with ammonia produces a violet complex? Use scientific reasoning to explain your answer.
- 85. Open-ended30 seconds1 ptUse the pH scale to describe an acidic solution and a basic solution. At what pH would a solution be considered neutral? Why?
- 86. Open-ended30 seconds1 ptWhat ion is contained in the unknown solution? Use your results as evidence.
- 87. Open-ended30 seconds1 ptImagine that the unknown solution contains aqueous ammonium sulfate, which is commonly used in fertilizer. Write a balanced equation for the precipitation of barium sulfate after mixing aqueous ammonium sulfate and barium chloride.
- 88. Open-ended30 seconds1 ptPotassium carbonate is frequently used in the production of cocoa powder, and like sodium bicarbonate, is easily dissolved in water. Write the balanced reaction between potassium carbonate and water to produce carbon dioxide.
