Isotopes and Their Properties

The video tutorial explains isotopes, focusing on hydrogen and uranium. It describes hydrogen isotopes: normal hydrogen, deuterium, and tritium, highlighting their atomic structure. The tutorial then shifts to uranium isotopes, detailing uranium-234, uranium-235, and uranium-238, and their nuclear properties. It covers nuclear reactions like fission and alpha emission, emphasizing the role of neutrons in isotope stability.

What is the simplest form of hydrogen composed of?

• One proton and two electrons

• One proton and one electron

• Two protons and one electron

• Two protons and two electrons

What distinguishes deuterium from the simplest form of hydrogen?

• It has two protons

• It has one neutron

• It has two electrons

• It has no electrons

How many neutrons does tritium have?

• One

• Two

• None

• Three

What is a common characteristic of all isotopes of an element?

• Same atomic mass

• Same number of neutrons

• Same number of protons

• Same number of electrons

How many protons does uranium always have?

• 90

• 91

• 93

• 92

What is the naming convention for isotopes?

• Element name followed by atomic number

• Element name followed by electron count

• Element name followed by mass number

• Element name followed by neutron count

What happens when uranium-235 absorbs a neutron?

• It becomes uranium-238 and becomes stable

• It remains unchanged

• It becomes uranium-234 and emits alpha particles

• It becomes uranium-236 and undergoes fission

What is the most common naturally occurring isotope of uranium?

• Uranium-235

• Uranium-238

• Uranium-234

• Uranium-236

Which uranium isotope is known for being short-lived and radioactive?

• Uranium-238

• Uranium-236

• Uranium-234

• Uranium-235

How can you calculate the number of neutrons in an isotope?

• Subtract the atomic number from the mass number

• Add the atomic number to the mass number

• Divide the mass number by the atomic number

• Multiply the atomic number by the mass number