U3-4 - Nuclear Chemistry

Question 1

How are heavier elements formed in stars?

Answer 1

From lighter elements via nuclear fusion.

Question 2

Nuclear fusion

Answer 2

A reaction where two or more atoms join to form one or more heavier atoms.

Question 3

Background radiation

Answer 3

Radiation that is all around us.

Question 4

Give one example of a natural radiation source.

Answer 4

Any one of:

cosmic rays, rocks and soil, living things.

Question 5

Give one example of an artificial radiation source.

Answer 5

Any one of:

medical sources, radioactive fallout, radioactive waste