Across
- 2. The basic building block that links together to form a polymer.
- 6. A solid material that is often hard, brittle, and heat-resistant, made by shaping and firing a nonmetallic mineral.
- 7. A reaction involving a change in the nucleus of an atom. (2 words no space)
- 8. A method of estimating the age of materials using radioactive isotopes. (2 words no space)
- 9. A radioactive form of an element used to track chemical reactions in organisms.
- 11. Atoms of the same element with different numbers of neutrons.
- 12. A substance made up of atoms of two or more metals or a metal and another element.
- 13. A special kind of glass that carries light signals and is used in communication. (2 words no space)
- 17. The tiny particle with a positive charge that is given off during radioactive decay.(2 words no space)
- 18. A man-made material that can be molded into shapes and is made from polymers.
- 19. The total number of protons and neutrons in an atom's nucleus.(2 words no space)
Down
- 1. A material made of two or more substances with different properties.
- 3. A treatment that uses high-energy radiation to shrink or destroy cancer cells.
- 4. The time it takes for half the atoms in a radioactive substance to decay.(2 words no space)
- 5. The form of electromagnetic radiation released from the nucleus during decay.(2 words no space)
- 10. The process by which an unstable atomic nucleus loses energy by emitting radiation. (2 words no space)
- 14. A particle with a negative charge emitted during radioactive decay. (2 words no space)
- 15. A material made by fusing sand and other substances, often clear and brittle.
- 16. A long chain molecule made by joining many small units together.