Experiment 2: characterizing bacteria isolated from soil data tables table 1: gram staining observations table 2: experiment 2b catalase assay results post-lab questions in which soil type would be more likely to find a higher proportion of gram-positive microorganisms? why? (if necessary, use a textbook or reputable online source to inform your answer). what effect should heat treatment have on the proportion of endospore producing microbes? what effect does heat treatment have on the number of isolated colonies?

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.