Exploring Atomic Structure: Atoms, Ions, and Isotopes

The video tutorial covers the structure of an atom, including its nucleus, protons, neutrons, and electrons. It explains the relative mass and charge of these particles, the concept of atomic size, and the scale of atomic diagrams. The tutorial also discusses the periodic table, atomic numbers, and isotopes, using uranium as an example. Additionally, it explores electron orbits, energy levels, and the process of ionization.

What is the charge of a proton?

• -1

• +2

• 0

• +1

What is the charge on an electron?

• +2

• -1

• +1

• 0

What particle in an atom has a negligible mass compared to protons?

• Neutron

• Muon

• Electron

• Positron

What does the atomic number of an element represent?

• Number of electrons in a neutral atom

• Total number of protons and neutrons

• Number of protons

• Number of neutrons

How do you calculate the number of neutrons in an atom?

• Atomic number + Atomic mass

• Atomic mass - Atomic number

• Atomic number / Atomic mass

• Atomic number - Atomic mass

What does the atomic mass number indicate?

• Number of electrons

• Number of protons

• Total number of protons and neutrons

• Total number of electrons and protons

What is the most common isotope of uranium found in Earth's crust?

• Uranium-236

• Uranium-235

• Uranium-238

• Uranium-234

Tags

NGSS.MS-PS1-1

What happens when an electron absorbs electromagnetic radiation?

• It becomes a neutron

• It moves to a lower energy level

• It leaves the atom

• It moves to a higher energy level

Tags

NGSS.MS-PS4-2

What is ionization in the context of atomic particles?

• Losing a neutron

• Gaining a neutron

• An electron escaping the atom

• A proton being added

What is the charge of an atom that has lost an electron?

• Positive

• Negative

• Neutral

• Double positive