Chemistry Basics Quiz
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Questions and Answers

Chemistry is called the ______ science because it relates directly to all other science fields.

central

The branch of chemistry that deals with compounds that do not contain carbon is called:

  • physical
  • inorganic (correct)
  • organic
  • analytical

    • Put into scientific notation with the correct number of sig figs: 42,000

  • 4.2 x 10^4 (correct)
  • 4.2 x 10^-4
  • 42.00 x 10^3
  • 0.42 x 10^5
  • 4.200 x 10^4
  • 42 x 10^3

    • Matter:

    <p>Has mass</p> Signup and view all the answers

    Where are protons found in atoms?

    <p>in the nucleus</p> Signup and view all the answers

    Melting aluminum metal is an example of:

    <p>a physical change</p> Signup and view all the answers

    Which of these is a homogenous mixture?

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

    Which of these is a compound?

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

    Which of these is a CHEMICAL property?

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

    In a chemical reaction, the mass of the reactants...

    <p>is equal to the mass of the products</p> Signup and view all the answers

    What is the estimated digit in this measurement? 5,279.10

    <p>The 1</p> Signup and view all the answers

    Which number has 2 significant digits? Select all that apply.

    <p>8.2</p> Signup and view all the answers

    Put this number into scientific notation: 0.0045

    <p>4.5 x 10^-3</p> Signup and view all the answers

    If the density of a liquid is 2g/ml and the volume of the liquid is 10ml, what is the mass?

    <p>20g</p> Signup and view all the answers

    275 + 9.3 = ______ (properly round)

    <p>284</p> Signup and view all the answers

    Round this number to 1 significant figure: 0.047

    <p>0.05</p> Signup and view all the answers

    Express the sum of 7.68 m and 5.0 m using the correct rounding rules.

    <p>12.7 m</p> Signup and view all the answers

    Express the product of 2.2 mm and 5.00 mm using the correct rounding rules.

    <p>11 mm²</p> Signup and view all the answers

    Calculate the atomic mass.

    <p>15.003 amu</p> Signup and view all the answers

    The fact that Argon's atomic mass is 39.948 would mean that Argon-39 is ____ than Argon-40.

    <p>Less common</p> Signup and view all the answers

    How many protons, neutrons, and electrons are found in the sodium ion below? 23Na+11

    <p>P=11, N=12, E=10</p> Signup and view all the answers

    What happened in J.J. Thomson's Cathode Ray Tube experiment?

    <p>Negatively charged electrons repelled by positive plates</p> Signup and view all the answers

    Who did the Gold Foil Experiment?

    <p>Ernest Rutherford</p> Signup and view all the answers

    How many protons, and neutrons does this atom have? (19)3Cu^3+

    <p>P=29, N=34</p> Signup and view all the answers

    To calculate the number of neutrons in an atom you subtract the mass number minus atomic number.

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

    How many protons, neutrons, and electrons are in carbon-14 shown below? 14C6

    <p>P=6, N=8, E=6</p> Signup and view all the answers

    Which of these is the electron configuration for silicon?

    <p>1s2 2s2 2p6 3s2 3p3</p> Signup and view all the answers

    Which of these is the correct orbital diagram for oxygen?

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

    An element found in d-block would also:

    <p>Have at least 21 electrons</p> Signup and view all the answers

    Isotopes have ______

    <p>the same number of protons but different number of neutrons</p> Signup and view all the answers

    What is an orbital?

    <p>Region where electrons are likely to be found</p> Signup and view all the answers

    The electron configuration that is not possible is:

    <p>1s22s3</p> Signup and view all the answers

    How many protons are in Chlorine?

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

    How many neutrons are in iron? 56Fe26

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

    Which atomic particle determines the chemical behavior of an atom?

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

    Which of these is correct about Carbon-13?

    <p>7 neutrons</p> Signup and view all the answers

    What orbital shapes are found at the 2nd energy level?

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

    Ca+2 has ______

    <p>18 electrons</p> Signup and view all the answers

    Which is true?

    <p>4s fills before 3d</p> Signup and view all the answers

    Hydrogen walks into a bar & says 'I think I lost an electron' bartender says 'Are you sure?'

    <p>I'm positive</p> Signup and view all the answers

    Which electron configuration is correct?

    <p>1s2 2s2 2p6 3s2 3p6 4s2 4d10</p> Signup and view all the answers

    Which ion is the smallest?

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

    What is the photoelectric effect?

    <p>when light shines on a material and electrons are emitted</p> Signup and view all the answers

    1s22s22p63s23p64s23d104p6 is the electron configuration for ______

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

    Which electron configuration is VALID for a neutral atom?

    <p>none of these are valid</p> Signup and view all the answers

    What is the element shown in the orbital diagram below?

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

    Which of these is always equal to the element's atomic number?

    <p>Number of protons</p> Signup and view all the answers

    The 14 in Carbon-14 indicates ______

    <p>the mass #</p> Signup and view all the answers

    Which orbital diagram is correct?

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

    Which characteristics are found in all metals? (select all that apply)

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

    Which of these would be have the lowest ionization energy?

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

    Another name for inner-transition metals

    <p>f-block</p> Signup and view all the answers

    Which of these is an alkaline earth metal?

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

    Transition metals:

    <p>are found in d-block</p> Signup and view all the answers

    Which is a metalloid?

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

    Which element is in p block?

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

    Which element is in the 2 period?

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

    What is the shape of a p-orbital?

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

    Which element will NOT form a +2 cation?

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

    Study Notes

    Chemistry Quiz Questions and Answers

    • Question 1: Chemistry is the primary science. It relates directly to all other science fields.

    • Question 2: Inorganic chemistry is the branch of chemistry that deals with compounds lacking carbon.

    • Question 3: 4.2 x 104 is the correct scientific notation for 42,000 with significant figures.

    • Question 4: Matter takes up space and has mass.

    • Question 5: A liquid has a definite volume, but no definite shape.

    • Question 6: Protons are found in the nucleus of an atom.

    • Question 7: Melting aluminum is a physical change.

    • Question 8: Air is a homogeneous mixture.

    • Question 9: CaCO3 is a compound.

    • Question 10: Flammability is a chemical property.

    • Question 11: In a chemical reaction, the mass of the reactants is equal to the mass of the products.

    • Question 12: Salt water is a homogeneous mixture.

    • Question 13: Vegetable oil is a heterogeneous mixture.

    • Question 14: The estimated digit in 5,279.10 is 9.

    • Question 15: 8.2 and 0.0820 have two significant digits.

    • Question 16: 4.5 x 10-3 is the scientific notation for .0045.

    • Question 17: The mass of a liquid with a density of 2 g/ml and a volume of 10 ml is 20 g.

    • Question 18: 275 + 9.3 = 284.3.

    • Question 19: Rounded to one significant figure, 0.047 is 0.05.

    • Question 20: The sum of 7.68 m and 5.0 m, rounded correctly is 12.7 m

    • Question 21: The product of 2.2 mm and 5.00 mm, rounded correctly is 11 mm2

    • Question 22: Calculate the atomic mass based on data provided.

    • Question 23: Argon-39 is less common than Argon-40

    • Question 24: Calculate the protons, neutrons, and electrons in a sodium ion based on data provided

    • Question 25: Negatively charged electrons are repelled by positive plates.

    • Question 26: Ernest Rutherford did the Gold Foil Experiment.

    • Question 27: Calculate the protons and neutrons in Cu-63, based on data provided

    • Question 28: To calculate the number of neutrons in an atom, subtract the atomic number from the mass number.

    • Question 29: Carbon-14 has 6 protons, 8 neutrons, and 6 electrons.

    • Question 30: The electron configuration for silicon is 1s2 2s2 2p6 3s2 3p2.

    • Question 31: The correct orbital diagram for oxygen is A.

    • Question 32: An element found in the d-block is a transition metal and has at least 21 electrons.

    • Question 33: Isotopes have the same number of protons but a different number of neutrons.

    • Question 34: An orbital is a region where electrons are likely to be found.

    • **Question 35:**1s22s3 is not a possible electron configuration.

    • Question 36: Chlorine has 17 protons.

    • Question 37: Iron-56 has 30 neutrons.

    • Question 38: The proton determines the chemical behavior of the atoms.

    • Question 39: Carbon-13 has 7 protons and 6 neutrons.

    • Question 40: The orbital shapes found at the second energy level are s and p.

    • Question 41: Ca+2 has 18 electrons.

    • Question 42: If n=5, it can hold 50 electrons and 4s fills before 3d.

    • Question 43: Hydrogen is positive when it loses an electron.

    • Question 44: 1s22s22p63s23p64s23d104p6 is a correct electron configuration.

    • Question 45: The smallest ion is O2-.

    • Question 46: The photoelectric effect is when light shines on a material and electrons are emitted.

    • Question 47: Krypton has the electron configuration 1s22s22p63s23p64s23d104p6

    • Question 48: 1s22s23s2 is a valid electron configuration for a neutral atom.

    • Question 49: The element in the orbital diagram is Phosphorus.

    • Question 50: The number of protons in an atom is equal to the atomic number.

    • Question 51: The 14 in Carbon-14 indicates the mass number.

    • Question 52: Diagram B and C are correct diagrams.

    • Question 53: Malleable, conducts electricity, luster, and solid at room temperature are characteristics of metals.

    • Question 54: Rb, has the lowest ionization energy.

    • Question 55: Inner-transition metals are the f-block elements.

    • Question 56: Barium (Ba) is an alkaline earth metal

    • Question 57: Transition metals are found in the d-block

    • Question 58: Metalloids are also found in the p-block

    • Question 59: Chlorine (Cl) is in p block

    • Question 60: Lithium (Li) is in the 2nd period.

    • Question 61: The shape of a p-orbital is a dumbbell.

    • Question 62: Aluminum (Al) will NOT form a +2 cation.

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