Across
- 2. / biological catalysts; mostly proteins
- 5. / substance formed by the chemical combination of two or more elements in definite proportions
- 7. / negatively charged particle; located in the space surrounding the nucleus
- 9. / smallest unit of most compounds that displays all the properties of that compound
- 14. / a compound that prevents sharp, sudden changes in pH
- 15. / compound with an amino group on one end and a carboxyl group on the other end
- 19. / energy input that is needed for a reaction to begin
- 21. / the center of an atom, which contains the protons and neutrons
- 22. / an atom that has a positive or negative charge
- 26. / process that changes, or transforms, one set of chemicals with another set of chemicals
- 28. / dissolving substance in a solution
- 29. / a subunit of which nucleic acids are composed
- 30. / substance that is dissolved in a solution
- 32. / macromolecule containing hydrogen, oxygen, nitrogen, carbon, and phosphorous
- 34. / compound that prevents sharp, sudden changes in pH
Down
- 1. / elements or compounds that enter into a chemical reaction
- 3. / weak attraction between a hydrogen atom and another atom
- 4. / sight attraction that develops between oppositely charged regions of nearby molecules
- 6. / material composed of two or more elements or compounds that are physically mixed together but not chemically combined
- 8. / reactant of an enzyme-catalyzed reaction
- 10. / chemical bond formed when one or more electrons are transferred from one atom to another
- 11. / one of several forms of a single element, which contains the same number of protons but a different number of neutrons
- 12. / type of bond between atoms in which the electrons are shared
- 13. / force of attraction between different kinds of molecules
- 14. / compound that produces hydroxide ions (OH-) in solution, solutions with a pH level of more than 7
- 16. / macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
- 17. / elements or compounds created by a chemical reaction
- 18. / a small chemical unit that makes up a polymer
- 20. / a scale with a values from 0 to 14, used to measure the concentration of H+ ions in a solution
- 23. / compound that forms hydrogen ions (H+) in solution, a solution with a pH of less then 7
- 24. / attraction between molecules of the same substance
- 25. / pure substance that consists entirely of one type of atom
- 26. / substance that speeds up the rate of a chemical reaction
- 27. / compound made of carbon, hydrogen, and oxygen atoms; types of nutrients that are major sources of energy to the body
- 28. / type of mixture in which all the components are evenly distributed
- 31. / macromolecule that contains carbon, hydrogen, oxygen, nitrogen; needed by the body for growth and repair
- 33. / the basic unit of matter
- 35. / a molecule composed of many monomers; makes up macromolecules