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.
Confidence votes 14.1K. Chemical reactions occur when a particular part of one element or molecule meets a particular part of another element or molecule. The reaction works similar to putting a key in a lock. elements and molecules move much faster at high temperatures than they do at slower temperatures.When they move faster, they bounce into each other many more times. Thus, they have many more opportunities to hit the spot where the chemical reaction will occur.lements and molecules move much faster at high temperatures than they do at slower temperatures. When they move faster, they bounce into each other many more times. Thus, they have many more opportunities to hit the spot where the chemical reaction will occur.