SPS4. Nuclear Chemistry

Front

What is the time it takes for half of a radioactive substance to decay called?

Back

Half-life

Front

What happens to the nucleus during fission?

Back

The nucleus becomes smaller.

Front

What happens to the nucleus during fusion?

Back

The nucleus becomes larger.

Front

What are the benefits of nuclear energy?

Back

Nuclear energy has a high energy output and reduces greenhouse gas emissions.

Front

What process involves the splitting of a nucleus into two smaller nuclei?

Back

Fission

Front

If the half-life of iodine-131 is 8 days, how much of a 5.0g sample is left after 32 days?

Back

0.3125g

Front

What is nuclear fission?

Back

A nuclear reaction where the nucleus of an atom splits into smaller parts.

Front

What is nuclear fusion?

Back

A nuclear reaction where two light atomic nuclei combine to form a heavier nucleus.

Front

What is radioactive decay?

Back

The process by which an unstable atomic nucleus loses energy by radiation.

Front

What is a radioactive isotope?

Back

An isotope of an element that has an unstable nucleus and emits radiation.