PS Chapter 7 Review, 2020

Front

What fraction of a radioactive substance remains after 4 half-lives?

Back

1/16

Front

Which type of particle has the highest mass?

Back

Alpha particle

Front

If the half-life of a radioactive element is 100 years, how long would it take for the radioactivity to reduce by one half?

Back

100 years

Front

The process by which nuclei having small masses are united to form a single larger nucleus is called nuclear ____.

Back

Fusion

Front

Which process has been used to make bombs?

Back

Both fission and fusion

Front

What is the definition of half-life?

Back

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

Front

What is nuclear fission?

Back

The process of splitting a large atomic nucleus into smaller nuclei, releasing energy.

Front

What is nuclear fusion?

Back

The process of combining two light atomic nuclei to form a heavier nucleus, releasing energy.

Front

What type of radiation is emitted during alpha decay?

Back

Alpha particles, which consist of 2 protons and 2 neutrons.

Front

What is the main difference between fission and fusion?

Back

Fission splits heavy nuclei, while fusion combines light nuclei.