Semester 2 Unit 1 Kim Vocabulary: Atoms and Radioactivity

Front

What is fission?

Back

Fission is the nuclear process in which a heavy nucleus splits into smaller nuclei, releasing a significant amount of energy.

Front

What happens to the charge of an atom when it loses electrons?

Back

The charge becomes positive.

Front

What is the process of combining two light nuclei to form a heavier nucleus called?

Back

Fusion.

Front

What is an ion?

Back

An ion is an atom that has a positive or negative charge due to the loss or gain of electrons.

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle, consisting of 2 protons and 2 neutrons.

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which a neutron is transformed into a proton and an electron, with the electron being emitted.

Front

What is gamma radiation?

Back

Gamma radiation is a form of electromagnetic radiation emitted from a radioactive nucleus, carrying no charge and high energy.

Front

What is half-life?

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay.

Front

What is the difference between fission and fusion?

Back

Fission is the splitting of a heavy nucleus, while fusion is the combining of light nuclei.

Front

What is a nuclear equation?

Back

A nuclear equation represents a nuclear reaction, showing the initial and final nuclei involved.