In the first test tube, place 1 – 2 g of CuSO4  5 H2O. 2. Gently heat the bottom of the test tube. Observe the changes that occur. Why does the color change? Why is condensation occurring at the top of the tube? What is the chemical reaction that describes the color change, and accounts for the condensation? Is this an exothermic or endothermic reaction? Why?

gas

explanation:

hdahhd

howard

              nitroswawdasdwasdawsdwasdwasdwasdwaswasdwasdawdswasdwadwadswadadadasd gay

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.