Chemistry in Biology
Across
- 2. Part of the atom located on the outside of the nucleus
- 4. ________ bonds occur when electrons are shared
- 5. ____________ bonds occur when electrons are shared
- 9. ____________ = Atoms
- 10. Neutrons and Protons are located in the __________
- 11. Are the process by which atoms or groups of atoms in substances are reorganized into different substances
- 12. __________ Isotopes are broken down by radiation when the nucleus of an atom breaks up
- 13. The building blocks of matter
- 14. Atoms of the same element that have the same number of protons and electrons but have a different number of neutrons
- 16. The positively charged part of an atom
- 17. __________-12 is used to date substances that have once been alive
Down
- 1. A compound n which the atoms are held together by covalent bonds.
- 3. The neutral part of an atom
- 5. The study of matter
- 6. The beginning portion of a chemical reaction
- 7. Carbon ____________ happens when nitrogen becomes carbon through beta decay
- 8. A pure substance that cannot be broken down by physical means
- 15. The result of a chemical reaction