Entries by Daphne Hanson

The alteration of an atom

The alteration of an atom for the Share of a covalent bond For 14. Explain the difference between a nonpolar covalent bond and a polar covalent bond. 15. Make an electron distribution diagram of water. Which element is most electronegative? Why is water considered a polar molecule? Label the regions that are more positive or […]

The purpose of the aseptic technique

The purpose of the aseptic technique is to control the conditions of the work environment so that sterile media remain that way until inoculated deliberately by the lab worker (you). The two tubes represent the "before" and “after" results when this is accomplished — a sterile medium is inoculated and grows to produce a pure […]