As you have seen in this lab, the density of water is near 1 g/cm3. anything with a density lower than this will float in water, and anything with a higher density will sink. imagine you are building a submarine. how could you be sure to have it sink and then rise? make sure its density is always above 1.0 g/cm3. make sure its density is always below 1.0 g/cm3. develop a way to adjust its density so that it can be above and below 1.0 g/cm3.

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.