Nutrition and Growth of Bacteria (page 4) (This chapter has 6 pages) Â© Kenneth Todar, PhD Physical and Environmental Requirements for Microbial Growth The procaryotes exist in nature under an enormous range of physical conditions such as O2 concentration, Hydrogen ion concentration (pH) and temperature.
In a double replacement reaction parts of two compounds switch places to form two new compounds. Two reactants yield two products. For example when silver nitrate combines with sodium chloride, two new compounds--silver chloride and sodium nitrate are formed because the sodium and silver switched places.
CHEMICAL REACTIONS-process by which one or more atoms of one or more substances are rearranged to form different substances-this is also known as a chemical change-indications of chemical changes occuring is temperature change, color change, odor, formation of gas bubbles, and appreance of a solid.RODUCTS OF A DOUBLE-REPLACEMENT REACTION-a solid known as a precipitate is normally produced in a double-replacement reaction-of the two different types of compounds formed in a double-replacement element one is often a solid, gas, or water. î î î.