1st Semester final review #1: At. Theory and Radioactivity

Front

What is the nuclear symbol for a beta particle?

Back

The nuclear symbol for a beta particle is β or e⁻.

Front

Which form of radiation has the greatest penetrating power?

Back

Gamma rays have the greatest penetrating power.

Front

Where are electrons found in the modern model of the atom?

Back

Electrons are found in regions called orbitals.

Front

What is the hottest part of a Bunsen burner flame?

Back

The tip of the inner blue cone is the hottest part of the flame.

Front

Can fusion reactions be used to produce energy in nuclear reactors on Earth?

Back

No, fusion reactions cannot be used to produce energy in reactors on Earth.

Front

What are alpha particles?

Back

Alpha particles are positively charged particles made up of 2 protons and 2 neutrons.

Front

What is radioactivity?

Back

Radioactivity is the process by which unstable atomic nuclei lose energy by emitting radiation.

Front

What is the difference between fission and fusion?

Back

Fission is the splitting of a heavy nucleus into smaller nuclei, while fusion is the combining of light nuclei to form a heavier nucleus.

Front

What type of radiation is emitted during alpha decay?

Back

Alpha decay emits alpha particles.

Front

What is the role of neutrons in the nucleus?

Back

Neutrons help stabilize the nucleus by offsetting the repulsive forces between protons.