Review of 2nd Quarter PS 2024 Part 3

Front

What does radioactive mean?

Back

That atoms are unstable and can break down.

Front

What is the symbol for an alpha particle?

Back

He (Helium nucleus)

Front

Finish the equation: 181_73Ta --> ____ + 181_74W

Back

0_-1e (Beta particle)

Front

What is the formula of Sodium oxide?

Back

Na2O

Front

What is a decay equation?

Back

A mathematical representation of the process by which an unstable atomic nucleus loses energy by emitting radiation.

Front

What is the definition of an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the difference between alpha, beta, and gamma radiation?

Back

Alpha radiation consists of helium nuclei, beta radiation consists of electrons or positrons, and gamma radiation consists of high-energy photons.

Front

What is half-life in radioactive decay?

Back

The time required for half of the radioactive atoms in a sample to decay.

Front

What is the formula for calculating the remaining quantity of a radioactive substance?

Back

N(t) = N0 * (1/2)^(t/T1/2), where N0 is the initial quantity, t is time, and T1/2 is the half-life.

Front

What is a neutron?

Back

A subatomic particle found in the nucleus of an atom, with no electric charge.