Vocabulary.
Match the words with their explanations.

• Объекты 1
  • Radium
  • Chemistry
  • cancer
  • cells
  • decay
  • the DNA
• Объекты 2
  • a white metal that is radioactive and is used in the treatment of diseases such as cancer
  • the science that is concerned with studying the structure of substances and the way that they change or combine with each other
  • a very serious disease in which cells in one part of the body start to grow in a way that is not normal
  • the smallest parts of a living thing that can exist independently
  • to be slowly destroyed by a natural chemical process
  • the substance that carries genetic information in the cells of the body