Regents Chemistry Test Preparation Practice

    Regents Test, Full Exam Practice Online: chemistry January 2015

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50

    Base your answers to questions 51 through 53 on the information below and on your knowledge of chemistry.

    The balanced equation below represents the reaction of glucose, C6H12O6, with oxygen at 298 K and 101.3 kPa.

    C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(ℓ)

    51
    52
    53

    Base your answers to questions 54 and 55 on the information below and on your knowledge of chemistry.

    The diagram below represents a cylinder with a movable piston. The cylinder contains 1.0 liter of oxygen gas at STP. The movable piston in the cylinder is pushed downward at constant temperature until the volume of O2(g) is 0.50 liter.

    gas-lows fig: chem12015-exam_g15.png

    54
    55

    Base your answers to questions 56 through 58 on the information below and on your knowledge of chemistry.

    The formulas and the boiling points at standard pressure for ethane, methane, methanol, and water are shown in the table below.

    intermolecular-forces-and-physical-properties-of-substances fig: chem12015-exam_g16.png

    56
    57
    58

    Base your answers to questions 59 through 61 on the information below and on your knowledge of chemistry.

    The diagrams below represent ball-and-stick models of two molecules. In a ball-and-stick model, each ball represents an atom, and the sticks between balls represent chemical bonds.

    electron-dot-diagrams-(lewis-structures) fig: chem12015-exam_g17.png

    59
    60
    61

    Base your answers to questions 62 and 63 on the information below and on your knowledge of chemistry.

    The nuts, bolts, and hinges that attach some gates to a playground fence can be made of iron. The iron can react with oxygen in the air. The unbalanced equation representing this reaction is shown below.

    Fe(s) + O2(g) → Fe2O3(s)

    62
    63

    Base your answers to questions 64 and 65 on the information below and on your knowledge of chemistry.

    The pH of various aqueous solutions are shown in the table below.

    acidity-ph-and-indicators fig: chem12015-exam_g18.png

    64
    65

    Base your answers to questions 66 through 68 on the information below and on your knowledge of chemistry.

    There are six elements in Group 14 on the Periodic Table. One of these elements has the symbol Uuq, which is a temporary, systematic symbol. This element is now known as flerovium.

    66
    67
    68

    Base your answers to questions 69 through 72 on the information below and on your knowledge of chemistry.

    A student made a copper bracelet by hammering a small copper bar into the desired shape. The bracelet has a mass of 30.1 grams and was at a temperature of 21°C in the classroom. After the student wore the bracelet, the bracelet reached a temperature of 33°C. Later, the student removed the bracelet and placed it on a desk at home, where it cooled from 33°C to 19°C. The specific heat capacity of copper is 0.385 J/g•K.

    69
    70
    71
    72

    Base your answers to questions 73 through 75 on the information below and on your knowledge of chemistry.

    Seawater contains dissolved salts in the form of ions. Some of the ions found in seawater are Ca2+, Mg2+, K+, Na+, Cl, HCO3, and SO42−. An investigation was conducted to determine the concentration of dissolved salts in seawater at one location. A 300.-gram sample of the seawater was placed in an open container. After a week, all the water had evaporated and 10. grams of solid salts remained in the container.

    73
    74
    75

    Base your answers to questions 76 through 78 on the information below and on your knowledge of chemistry.

    A student makes an aqueous solution of lactic acid. A formula for one form of lactic acid is shown below.

    functional-groups-and-types-of-organic-compounds fig: chem12015-exam_g19.png

    The solution is placed in a sealed flask to be used in a laboratory investigation. The equation below represents the lactic acid equilibrium system in the flask.

    functional-groups-and-types-of-organic-compounds fig: chem12015-exam_g20.png

    76
    77
    78

    Base your answers to questions 79 through 81 on the information below and on your knowledge of chemistry.

    Copper can be used for water pipes in homes. When the pipes corrode, copper atoms oxidize to form Cu2+ ions in the water.

    A homeowner has a water quality report prepared for a sample of water taken from pipes in the home. According to the report, the 550.-gram sample contains 6.75 × 10−4 gram of dissolved Cu2+ ions.

    79
    80
    81

    Base your answers to questions 82 through 85 on the information below and on your knowledge of chemistry.

    A breeder reactor is one type of nuclear reactor. In a breeder reactor, uranium-238 is transformed in a series of nuclear reactions into plutonium-239.

    The plutonium-239 can undergo fission as shown in the equation below. The X represents a missing product in the equation.

    identification-of-element fig: chem12015-exam_g21.png

    82
    83
    84
    85