Isotopes & Bohr Diagrams Quiz

What are isotopes?

• Atoms of the same element with different numbers of protons

• Atoms of different elements with the same number of neutrons

• Atoms of the same element with different numbers of electrons

• Atoms of the same element with different numbers of neutrons

How do isotopes of a particular element differ from each other?

• Different atomic numbers

• Different numbers of protons

• Different numbers of neutrons

• Different electron configurations

What is the significance of the Bohr diagram for hydrogen?

• It shows two electrons in the first energy level

• It shows a single electron orbiting the nucleus

• It shows two protons in the nucleus

• It shows multiple energy levels

Tags

NGSS.MS-PS1-1

How does the Bohr diagram for helium differ from that of hydrogen?

• Helium has two electrons in the second energy level

• Helium has one electron in the first energy level

• Helium has two electrons in the first energy level

• Helium has no electrons

Tags

NGSS.MS-PS1-1

What is isotope notation?

• A way of writing the chemical symbol with the atomic number only

• A way of writing the chemical symbol with the atomic mass only

• A way of writing the chemical symbol with both the atomic number and mass number

• A way of writing only the number of neutrons in an atom

How do you calculate the average atomic mass of an element with isotopes?

• Add the mass numbers of all isotopes

• Multiply the mass of each isotope by its natural abundance, then add these values

• Divide the mass number of the heaviest isotope by the number of isotopes

• Add the atomic numbers of all isotopes

What distinguishes an isotope from a different element?

• The number of protons

• The number of electrons

• The number of neutrons

• The atomic mass

In isotope notation, what does the number above the element symbol represent?

• The atomic number

• The number of neutrons

• The mass number

• The number of electrons

Why is the Bohr model important for understanding atomic structure?

• It accurately represents the exact paths of electrons

• It introduces the concept of quantized energy levels for electrons

• It shows the exact location of neutrons

• It provides a detailed view of the nucleus

Tags

NGSS.MS-PS1-1

Which of the following is true about elements and their isotopes?

• Isotopes have different atomic numbers

• Elements can have any number of isotopes, including none

• All isotopes of an element have the same number of electrons in their neutral state

• Isotopes of an element have different numbers of protons