GCSE Physics: Atomic Structure - Nuclear Equations

Front

What is represented by nuclear equations in radioactive decay?

Back

Nuclear equations represent radioactive decay by showing how the nucleus of an atom changes during the emission of radiation.

Front

How is an alpha particle represented in nuclear equations?

Back

An alpha particle is represented by a helium nucleus, which consists of 2 protons and 2 neutrons.

Front

What changes occur in the nucleus during alpha decay?

Back

In alpha decay, the mass number decreases by 4 and the atomic number decreases by 2.

Front

How is a beta particle represented in nuclear equations?

Back

A beta particle is represented by an electron that is emitted from the nucleus.

Front

What changes occur in the nucleus during beta decay?

Back

In beta decay, the atomic number increases by 1, but the mass number remains unchanged.

Front

Do gamma rays change the mass or charge of a nucleus?

Back

No, gamma rays do not change the mass or charge of a nucleus. They are a form of electromagnetic radiation.

Front

Why is gamma decay often considered more dangerous than alpha or beta decay?

Back

Gamma decay is often more dangerous because gamma rays can penetrate materials more deeply than alpha or beta particles.

Front

What is the atomic number of barium (Ba)?

Back

The atomic number of barium (Ba) is 56.

Front

What happens to Ba-139 during beta decay?

Back

Ba-139 decays by beta decay to become La-139, with the emission of a beta particle.