Across
- 2. compound with an amino group on one end and a carboxyl group on the other end
- 3. small chemical unit that makes up a polymer
- 6. reactant of an enzyme-catalyzed reaction
- 8. substance formed as a result of a chemical reaction
- 10. type of bond between atoms in which the electrons are shared
- 14. the basic unit of matter
- 16. The center of an atom, which contains the protons and neutrons
- 17. negatively charged particle that orbits the nucleus in the electron cloud
- 19. molecules composed of many monomers
- 22. fats, oils, and waxes
- 23. energy that is needed to get a reaction started
- 26. a reaction that absorbs energy
- 27. the number of protons in the nucleus of an atom
- 28. biological catalysts
- 29. macromolecule made up of amino acids
- 30. equal to the total number of protons and neutrons in the nucleus of an atom
Down
- 1. electron found in the outermost shell of an atom
- 4. one or two-letter abbreviation for a chemical element name
- 5. compound made up of carbon, hydrogen, and oxygen atoms
- 7. Positively charged particle found in the nucleus of an atom
- 9. a combination of 2 or more elements connected by bonds
- 11. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
- 12. subunit of which nucleic acids are composed
- 13. a large organic molecule made up of many atoms
- 15. process that changes one set of chemicals into another set of chemicals
- 18. substance that speeds up the rate of a chemical reaction
- 20. particle found in the nucleus that has no charge
- 21. elements or compounds that enter into a chemical reaction
- 24. pure substance that consists entirely of one type of atom
- 25. a reaction that releases energy