Back to AI Flashcard MakerChemistry /Chemistry Concepts: Atomic Structure and Isotopes Part 1

Chemistry Concepts: Atomic Structure and Isotopes Part 1

Chemistry20 CardsCreated 4 months ago

This deck covers key concepts related to atomic structure, isotopes, and elemental properties. It includes questions on protons, electrons, isotopic symbols, and calculations of atomic mass.

Which of the following statements about protons are false? Check all that apply.

A) Protons have the magnitude of charge as neutrons, but are opposite in sign.B) Some atoms do not have any protons.D) Protons have about the same mass as electrons.
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Key Terms

Term
Definition
Which of the following statements about protons are false? Check all that apply.
A) Protons have the magnitude of charge as neutrons, but are opposite in sign.B) Some atoms do not have any protons.D) Protons have about the same mas...
How many electrons would it take to equal the mass of a helium nucleus? Express your answer using two significant figures.
7400
Fill in the blanks in Element Name column of the table. Enter element names separated by commas. Enter your answers in order from the top to the bottom of the table.
Aluminum,Antimony,Radon,Lead
Fill in the blanks in Element Symbol column of the table. Express your answers as chemical symbols separated by commas. Enter your answers in order from the top to the bottom of the table.
I,Na,Pb
Fill in the blanks in Atomic Number column of the table. Express your answers numerically separated by commas. Enter your answers in order from the top to the bottom of the table.
53,51,11
Which of the following elements are not main-group elements? Check all that apply.
Mo

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TermDefinition
Which of the following statements about protons are false? Check all that apply.
A) Protons have the magnitude of charge as neutrons, but are opposite in sign.B) Some atoms do not have any protons.D) Protons have about the same mass as electrons.
How many electrons would it take to equal the mass of a helium nucleus? Express your answer using two significant figures.
7400
Fill in the blanks in Element Name column of the table. Enter element names separated by commas. Enter your answers in order from the top to the bottom of the table.
Aluminum,Antimony,Radon,Lead
Fill in the blanks in Element Symbol column of the table. Express your answers as chemical symbols separated by commas. Enter your answers in order from the top to the bottom of the table.
I,Na,Pb
Fill in the blanks in Atomic Number column of the table. Express your answers numerically separated by commas. Enter your answers in order from the top to the bottom of the table.
53,51,11
Which of the following elements are not main-group elements? Check all that apply.
Mo
Which of the following elements would you expect to gain electrons in chemical changes? Sort these items into the proper categories.
Would expect to gain electrons - nitrogen, iodine. Wouldn't expect to gain electrons - gold, tungsten, strontium.
How many neutrons are in an atom with each set of atomic numbers and mass numbers?
A (mass number) – Z (atomic number, number of protons) = number of neutrons
Z = 28, A = 59. Express your answer as an integer.
n=31
Z= 92, A = 235. Express your answer as an integer.
n=143
Z = 21, A = 46. Express your answer as an integer.
n=25
Z = 18, A = 42. Express your answer as an integer.
n=24
Write isotopic symbols of the form X-A (for example, C-13) for each isotopes.
A=Z+N
The iodine isotope with 74 neutrons
I-27
The phosphorus isotope with 16 neutrons
P-31
The uranium isotope with 234 neutrons
U-326
The argon isotope with 22 neutrons
Ar-40
Determine the number of protons and neutrons in plutonium-239 and write its symbol in the form A/Z X
Plutonium-239 is used in nuclear bombs.
Neon has three naturally occurring isotopes: NeNe-20 with mass 19.9924 amu and a natural abundance of 90.60 %%, NeNe-21 with mass 20.9938 amu and a natural abundance of 0.260 %%, and NeNe-22 with mass 21.9914 amu and a natural abundance of 9.20 %%.
Express your answer using four significant figures.
Calculate the atomic mass of neon.
Atomic Mass = 20.19 amu