Unit 4 Exam RC F24

Front

What country is the city of Chernobyl located in?

Back

Ukraine

Front

What is the atomic number of an atom with 36 electrons?

Back

34

Front

How were the people of Pripyat affected by the Chernobyl meltdown?

Back

They were poisoned by radioactive fallout.

Front

What is the half-life of uranium-232?

Back

70 years.

Front

How many half-lives does it take for 10 g of uranium-232 to reduce to 0.63 g?

Back

4 half-lives.

Front

What is the half-life of iodine-131?

Back

8 days.

Front

Define atomic number.

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is radioactive decay?

Back

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

Front

What is a half-life?

Back

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

Front

What is radioactive fallout?

Back

Radioactive particles that are released into the atmosphere following a nuclear explosion or accident.