Flashcard on Alpha Decay

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an unstable atomic nucleus emits an alpha particle (2 protons and 2 neutrons), resulting in a new element with a lower atomic number.

Front

What is an alpha particle?

Back

An alpha particle is a type of subatomic particle consisting of 2 protons and 2 neutrons, identical to a helium nucleus, and is emitted during alpha decay.

Front

What is the significance of the atomic number in alpha decay?

Back

The atomic number decreases by 2 during alpha decay, which changes the element into a different element.

Front

What is the difference between alpha decay and beta decay?

Back

Alpha decay involves the emission of an alpha particle, while beta decay involves the transformation of a neutron into a proton or vice versa, emitting a beta particle (electron or positron).

Front

How does alpha decay affect the mass number of an element?

Back

The mass number decreases by 4 during alpha decay due to the loss of 2 protons and 2 neutrons.

Front

What is half-life in the context of radioactive decay?

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay into a different element or isotope.

Front

What are some common elements that undergo alpha decay?

Back

Common elements that undergo alpha decay include uranium-238, radium-226, and polonium-210.

Front

How can alpha particles be detected?

Back

Alpha particles can be detected using devices such as Geiger counters, scintillation counters, or by using a cloud chamber.

Front

What is the role of alpha decay in nuclear reactions?

Back

Alpha decay plays a role in nuclear reactions by contributing to the stability of heavy elements and influencing the process of nuclear fission.

Front

What safety precautions should be taken when handling alpha-emitting materials?

Back

Safety precautions include using protective clothing, working in well-ventilated areas, and using shielding materials to block alpha particles.