6. You arrive at a potential crime scene with copious amounts of blood and no bodies. After a DNA analysis has been performed you confirm that the blood must have come from at least 4 people,
possibly 5. And again there are no bodies. Because of the amount of blood you suspect that a
crime been committed. Would you start an investigation? If yes, how? (What steps would you
take). If no, why not? I

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Consider the story you just read. all but one of the choices below indicate that something is living.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.