From Friday's work, we were practicing how to determine what an atom's oxidation number is. Looking at Friday's worksheet it is the opposite of the Gain/Lose column. But what does the oxidation number represent. An atom that loses one or more electrons will have a positive charge For example. Magnesium would want to lose its 2 valence electrons to complete an outer shell What does that oxidation of 2- mean?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.