Easy Blue Color Change Demo with Household Chemicals

Easy Blue Color Change Demo with Household Chemicals You dont need a chemistry lab to perform a dramatic color change chemistry demonstration. Make a pale blue solution. Add another chemical and watch the solution form a precipitate and turn milky sky blue. Continue adding the color and watch swirls of vivid blue form, until finally, the entire solution turns deep translucent blue. Chem Demo Materials You only need water and two household chemicals for this project: hot tap watercopper sulfatehousehold ammonia I used Root Killâ„ ¢, which states on its label it is copper sulfate. Some pool treatments and algicides consist of copper sulfate, but read the ingredient list to make certain. Ammonia is sold as a common household cleaner. If you cant find pure dilute ammonia, try a glass cleaner that contains ammonia. Perform the Color Change Demo Dissolve a spoonful of copper sulfate in a cup of hot water. The proportions are not critical, but you want a high enough concentration of copper sulfate to get a blue color.Stir in a small amount of ammonia. See the swirls of milky pale blue? The blue solid will settle out of solution if you allow it to sit undisturbed.Adding more ammonia will start to turn the solution deep blue much brighter than the original copper sulfate solution. When the reaction goes to completion youll end up with a translucent blue liquid. You can a video of this reaction at YouTube to see what to expect. What Happened? Ammonia and copper sulfate initially react to precipitate copper hydroxide. Additional ammonia dissolves the copper hydroxide to form a vivid blue amino-copper complex. The cuprammonium solution could be used to dissolve cellulose as part of one method of producing Rayon. Blue Bottle Color Change Demo | More Home Chem Projects

The case for Bainbridge Borough Essay Example | Topics and Well Written Essays - 500 words

The case for Bainbridge Borough - Essay Example First and foremost, this person will undergo intensive labour to deliver the baby. This entitles the person to have some time to rest in order to be able to recover from the pain likely to be experienced during the period of giving birth. Secondly, the mother needs to nurse the newly born baby by suckling her and providing other necessary gentle care. Instead, Carol was offered two consecutive 90-day reasonable purpose leaves which amounted to 6 months of leave. This is a relevant contract provision which states that leaves of absence for a limited period without pay—not to exceed 90 days—shall be granted for any reasonable purpose. What Carol wants is leave to be with her adopted baby so this unpaid leave is just as good as maternity leave. In other words, it can be seen that Carol just wants to be controversial over nothing since she has been given another alternative to maternity leave which is specifically meant for mothers who have given birth naturally. 2. As an attorney for AFSCME Local 10, I think the council’s rejection of Carol’s unpaid maternity leave request violated the collective bargaining agreement. Article X, Section 4.A which deals with issues related to maternity as indicated by the final agreement between Bainbridge Borough and Local 10 state that maternity leaves not to exceed 6 months shall be granted at the request of an employee. As stipulated in this provision, it can be seen that Carole has requested for the leave, therefore she should be granted the opportunity to get it. Maternity leave covers various issues related to child bearing and rearing hence Carol should also be granted this leave since she intends to take care for her newly adopted baby. The baby needs mother care and this is the reason why I believe that Carole should be granted the leave. The refusal by the council to grant Carol this leave can be regarded as discrimination since the law is very clear that this leave can be granted to the