Chemistry Chapter 5 Quiz
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Questions and Answers

Which of the following represents a physical change?

  • Ice melting (correct)
  • Dry ice subliming
  • A match burning
  • Rubbing alcohol evaporating (correct)

    • Which set of elements tends to form cations in binary ionic compounds?

  • N, As, Bi
  • Se, I, Br
  • Rb, Al, O (correct)
  • Ca, Zn, Hg

    • What is the density of the metal ore if it weighs 9.25 g and displaces water from 21.25 mL to 26.47 mL?

  • 2.94 g/mL
  • 1.77 g/mL (correct)
  • 0.564 g/mL
  • 0.340 g/mL

    • Which of the following is an intensive property?

    <p>Color</p> Signup and view all the answers

    What is the charge on the Fe ions in Fe2O3?

    <p>3+</p> Signup and view all the answers

    Which ions are present in the compound Li2SO4?

    <p>Li+ and SO42- ions.</p> Signup and view all the answers

    How many significant figures are in the number 0.00186600?

    <p>6</p> Signup and view all the answers

    Round the number 0.00222755 to four significant figures and express it in standard exponential notation.

    <p>2.228 × 10^-3</p> Signup and view all the answers

    What is the molar mass of nitrogen gas (N2)?

    <p>28.0 g/mol</p> Signup and view all the answers

    Which number has the greatest number of significant figures?

    <p>0.5070</p> Signup and view all the answers

    What mass of ethane, C2H6, contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?

    <p>0.655 g</p> Signup and view all the answers

    How many significant figures are in the sum of 56.4, 0.7711, and 17?

    <p>three</p> Signup and view all the answers

    In the context of significant figures, how many significant figures does the number 2 in an ethane molecule represent?

    <p>one</p> Signup and view all the answers

    What is the volume of the custom-made shipping crate rounded to the correct number of significant figures?

    <p>1.78</p> Signup and view all the answers

    Identify a correct unit for measuring area.

    <p>cm2</p> Signup and view all the answers

    What is the mass of a proton in gigagrams?

    <p>1.67 × 10-36 Gg</p> Signup and view all the answers

    How many nanograms are equivalent to 500.0 μg of sulfur?

    <p>5.000 × 105 ng</p> Signup and view all the answers

    What is the average distance between nitrogen and oxygen atoms in nanometers if it is 115 pm?

    <p>1.15 × 10-2 nm</p> Signup and view all the answers

    Which of the following is equivalent to 16 mL?

    <p>16 cm3</p> Signup and view all the answers

    How many liters can a wine barrel hold if its capacity is 23.0 gallons?

    <p>87.1</p> Signup and view all the answers

    If a person weighs 77.1 kg, what is his weight in pounds?

    <p>154 pounds</p> Signup and view all the answers

    What is the name of the principle that states matter is neither created nor destroyed in a chemical reaction?

    <p>The Law of Conservation of Mass</p> Signup and view all the answers

    Which of the following describes a gas?

    <p>No definite shape and no definite volume</p> Signup and view all the answers

    Which statement about solids and liquids is accurate?

    <p>Both solids and liquids have atoms or molecules that pack closely together.</p> Signup and view all the answers

    What type of substance cannot be chemically broken down into simpler substances?

    <p>An element</p> Signup and view all the answers

    Which of the following describes a compound?

    <p>A substance made of two or more elements in a fixed, definite proportion</p> Signup and view all the answers

    How are homogeneous mixtures characterized?

    <p>They have uniform composition throughout.</p> Signup and view all the answers

    What is the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water?

    <p>8.08 g/mL</p> Signup and view all the answers

    If a substance has a mass of 455.6 g and a density of 19.3 g/cm³, what is its volume?

    <p>42.4 mL</p> Signup and view all the answers

    Which statement about noble gases is correct?

    <p>Noble gases are mostly found in a gaseous state.</p> Signup and view all the answers

    What is the atomic mass of cadmium?

    <p>112.41</p> Signup and view all the answers

    How many moles of Kr are contained in 398 mg of Kr?

    <p>4.75 × 10-3 moles Kr</p> Signup and view all the answers

    What mass (in mg) does 2.63 moles of nickel have?

    <p>2.23 × 10^4 mg</p> Signup and view all the answers

    How many neutrons are in nickel-59?

    <p>30</p> Signup and view all the answers

    Calculate the atomic mass of element 'X' based on its isotopes.

    <p>46.26 amu</p> Signup and view all the answers

    An ion has 8 protons, 9 neutrons, and 10 electrons. What is the symbol for this ion?

    <p>19F-</p> Signup and view all the answers

    Identify the element with an atomic number of 70.

    <p>ytterbium</p> Signup and view all the answers

    What is the correct chemical formula for cobaltous phosphate?

    <p>Co3(PO4)2</p> Signup and view all the answers

    What is the correct name for the compound Sn(SO4)2?

    <p>tin(IV) sulfate</p> Signup and view all the answers

    What is the formula for sulfurous acid?

    <p>H2SO3</p> Signup and view all the answers

    How many molecules of N2O4 are found in 76.3 g of N2O4?

    <p>7.26 × 10^23 N2O4 molecules</p> Signup and view all the answers

    What is the name for KMnO4?

    <p>potassium permanganate</p> Signup and view all the answers

    Calculate the molar mass of Al(C2H3O2)3.

    <p>204.13 g/mol</p> Signup and view all the answers

    What is the name of the compound TiHCO3?

    <p>titanium(II) bicarbonate</p> Signup and view all the answers

    What is the correct formula for aluminum sulfate?

    <p>Al2(SO4)3</p> Signup and view all the answers

    What is the atomic mass of element 'X' given two isotopes with the following characteristics: X-45 (44.8776 amu, 32.88%) and X-47 (46.9443 amu, 67.12%)?

    <p>46.26 amu</p> Signup and view all the answers

    What is the mass in milligrams of 2.63 moles of nickel?

    <p>2.23 × 10^4 mg</p> Signup and view all the answers

    How many neutrons are present in nickel-59?

    <p>30</p> Signup and view all the answers

    Which element has an atomic number of 70?

    <p>Ytterbium</p> Signup and view all the answers

    Identify how many moles of krypton (Kr) are in 398 mg of Kr.

    <p>4.75 × 10^-3 moles Kr</p> Signup and view all the answers

    Calculate the mass (in ng) of 2.33 × 10^20 atoms of oxygen.

    <p>1.62 × 10^7 ng</p> Signup and view all the answers

    An ion contains 8 protons, 9 neutrons, and 10 electrons. What is the symbol for this ion?

    <p>17O2-</p> Signup and view all the answers

    What is the mass number equal to?

    <p>The sum of the number of protons and neutrons.</p> Signup and view all the answers

    Which of the following statements about Dalton's Atomic Theory is false?

    <p>Atoms of sodium change into another element during chemical reactions.</p> Signup and view all the answers

    What does the atomic number represent?

    <p>The number of protons in an atom.</p> Signup and view all the answers

    Which of the following correctly characterizes the type of change represented in the molecular diagram?

    <p>It represents a physical change only.</p> Signup and view all the answers

    Which of the following represents the correct format of density in scientific notation?

    <p>3.99 × 10^-1 kg/m3</p> Signup and view all the answers

    Which mass does the symbol 3.99 × 10^-3 kg/m3 represent?

    <p>The density of a light gas.</p> Signup and view all the answers

    What is the implication of an atom being able to be broken down into smaller particles according to Dalton's theory?

    <p>It contradicts the basic idea of atomic structure.</p> Signup and view all the answers

    What is the correct number of gallons of paint needed for a room with an area of 955 square feet, given that a gallon covers 15 square yards?

    <p>24 gallons</p> Signup and view all the answers

    Which reading accurately reflects the temperature with the correct number of significant figures?

    <p>87.20°C</p> Signup and view all the answers

    What is the longest length among the options provided?

    <p>1.05 m</p> Signup and view all the answers

    What is the outcome of the calculation (433.621 - 333.9) × 11.900 reported with the correct number of significant figures?

    <p>1.187 × 10^3</p> Signup and view all the answers

    Which of the following is classified as a pure substance?

    <p>Carbon dioxide</p> Signup and view all the answers

    Identify the example of a heterogeneous mixture from the following options.

    <p>A casserole</p> Signup and view all the answers

    Which statement accurately describes osteoporosis?

    <p>It is most common in postmenopausal women.</p> Signup and view all the answers

    Which of the following demonstrates a physical change?

    <p>Frost appearing on grass.</p> Signup and view all the answers

    What is the volume of a box with dimensions 1.32 m, 1.32 m, and 1.32 m using the correct number of significant figures?

    <p>1.78</p> Signup and view all the answers

    Which unit is used for measuring area?

    <p>cm2</p> Signup and view all the answers

    What is equivalent to 500.0 μg of sulfur in grams?

    <p>5.000 × 10-7 g</p> Signup and view all the answers

    What is the equivalent distance of 115 pm in nanometers?

    <p>1.15 × 10-1 nm</p> Signup and view all the answers

    Which of the following volumes is equivalent to 16 mL?

    <p>16 cm3</p> Signup and view all the answers

    How many kiloliters are contained in a 8.51 × 10^8 cL sample?

    <p>8.51 × 10^3 kL</p> Signup and view all the answers

    How many liters can a wine barrel with a capacity of 23.0 gallons hold?

    <p>87.1</p> Signup and view all the answers

    Which of the following is NOT an example of a chemical change?

    <p>Ice melting</p> Signup and view all the answers

    Which of the following represents a physical property?

    <p>Mercury is a silvery liquid at room temperature.</p> Signup and view all the answers

    Which of the following properties is classified as intensive?

    <p>Density</p> Signup and view all the answers

    If a piece of metal ore weighs 9.25 g and displaces the water level in a graduated cylinder from 21.25 mL to 26.47 mL, what is the density of the ore?

    <p>2.94 g/mL</p> Signup and view all the answers

    How many of the following numbers contain 3 significant figures? 0.105, 1.050, 0.0200, 9.05 × 10²⁴

    <p>Two</p> Signup and view all the answers

    How many significant figures are in the answer for the expression 56.4 + 0.7711 + 17?

    <p>Three</p> Signup and view all the answers

    What is the correct name for the compound with the formula Hg(NO3)2?

    <p>mercury(II) nitrate</p> Signup and view all the answers

    Which of the following is the correct formula for the compound cobaltous phosphate?

    <p>Co2(PO4)3</p> Signup and view all the answers

    What is the molar mass of the compound Al(C2H3O2)3?

    <p>258.09 g/mol</p> Signup and view all the answers

    What is the name given to the compound KMnO4?

    <p>potassium permanganate</p> Signup and view all the answers

    How many moles of sodium are present in 1.60 moles of sodium phosphate?

    <p>6.40 moles of sodium</p> Signup and view all the answers

    What is the correct formula for sulfurous acid?

    <p>H2SO3</p> Signup and view all the answers

    Which of the following options correctly represents the mass percent composition of sulfur in Al2(SO4)3?

    <p>42.73%</p> Signup and view all the answers

    Study Notes

    Chapter 1-3 Practice Problems - Answers

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

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    Chapter 1-3 Practice Problems PDF

    Description

    Test your knowledge on physical changes, density calculations, and chemical properties with this quiz based on Chemistry Chapter 5. Questions cover topics like significant figures, ionic compounds, and molar masses. Perfect for students looking to reinforce their understanding of basic chemistry concepts.

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