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Final Review

Final Review. When a system at equilibrium is disturbed by application of a stress, it attains a new equilibrium position that minimizes the stress. This is known as ________. Le Chatlier’s Principle. Where is the hottest part of the Bunsen burner flame?. Top of the inner cone.

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Final Review

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  1. Final Review

  2. When a system at equilibrium is disturbed by application of a stress, it attains a new equilibrium position that minimizes the stress. This is known as ________. • Le Chatlier’s Principle

  3. Where is the hottest part of the Bunsen burner flame? • Top of the inner cone

  4. One orbital can hold a MAXIMUM of ______ electrons. • 2

  5. A liquid will boil when equilibrium vapor pressure equals __________. • Atmospheric pressure

  6. If you are using a polar solvent, what type of solute will most likely dissolve? • Polar solute

  7. Suppose that during the reaction a chemistry student touches the beaker and observes that it feels COLD. The student should conclude that the chemical reaction is ______.  • Endothermic

  8. What are 2 examples of appropriate dress in the lab? • Long pants • Closed toe shoes • Hair pulled back • No baggy sleeves • No dangling jewelry

  9. A certain isotope of hydrogen has the following hyphen notation: hydrogen-2. The number 2 represents the ______. • Mass number

  10. Identify: • Erlenmeyer Flask

  11. Given the following equation: 2H2O  2H2 + O2 . What type of reaction does this equation represent? • Decomposition

  12. mL is a unit of ____. • volume

  13. kPa is a unit of _____. • pressure

  14. What type of element is Mg? • Alkaline Earth Metal

  15. Identify: • Florence Flask

  16. Suppose you made a salt water solution. What is the solvent? • Water

  17. What symbol is used in a chemical equation to indicate that a substance is dissolved in water? • (aq)

  18. What type of element is F? • Halogen

  19. A substance made of two or more elements whose atoms are chemically combined is a(n) ______. • Compound

  20. Suppose you made a salt water solution. What is the solute? • Salt

  21. A stable solution in which the maximum amount of solute has been dissolved is _______ • Saturated

  22. Given the following equation: 2Na + 2HCl  2NaCl + H2. What type of reaction does this equation represent? • Single Displacement

  23. What is used as a cover to the evaporating dish? • Watch glass

  24. Isotopes of a given element have a different number of ______. • Neutrons

  25. Food coloring and water is considered a ______ mixture. • Homogeneous

  26. What symbol is used in a chemical equation to indicate that a substance is a solid? • (s)

  27. The process of joining atomic nuclei is called____ • Fusion

  28. A substance that increases the rate of a reaction without itself being changed is a(n) ______. • Catalyst

  29. What is the molecular geometry of the following?: • Trigonal Planar

  30. A homogeneous mixture is also known as a(n) ______. • Solution

  31. Suppose an atom has 6 protons and 8 neutrons. What is the mass number? • 14

  32. Which of the following elements is MOST stable?Na, U, Ba, Cl, Ne • Ne (it’s a noble gas!)

  33. “g” is a unit of _____. • Mass

  34. A bond where there is an UNEQUAL SHARING of electrons is ______. • Polar covalent

  35. According to Arrhenius, bases are defined as substances that ______. • Release OH- ions in water

  36. What is the molecular geometry of the following: • Trigonal pyramidal

  37. Identify: • Watch glass

  38. Soil is considered a ______ mixture. • Heterogeneous

  39. What symbol is used in a chemical equation to indicate that a substance is a gas? • (g)

  40. Suppose a reaction is occurring in a test tube. Further, suppose that a lit splint held over the test tube “pops” and/or “barks”. The gas in the test tube is most likely ______. • Hydrogen

  41. What are 3 ways to increase the rate of dissolving of a solute? • Heating • Stirring • Grinding

  42. Suppose a reaction is occurring in a test tube. Further, suppose that a lit splint held over the test tube and the flame gets brighter. The gas in the test tube is most likely ______. • Oxygen

  43. What type of element is He? • Noble Gas

  44. The change of state from a solid directly to a gas is called ______. • Sublimation

  45. Describe the particle spacing of a gas. Particles are spaced very far apart

  46. A solution that is capable of dissolving more solute is ______. • Unsaturated

  47. The change of state from a solid directly to a liquid is called _____. • melting

  48. Describe the particle spacing of a solid. Particles are spaced very CLOSE together

  49. If the volume of a gas is increased, then the gas pressure will ______. • decrease

  50. What type of element is Mn? • Transition Metal

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