Bag-O-Chemistry

For this experimant we used four differnet substances; Calcium Chloride, Sodium Bicarbonate, Water and Phenol Red. We first obtained a plastic ziplock bag to hold our substances. Then we used one scoop of the calcium chloride, which is a skin irritant, one scoop of sodium bicarbonate, commonly known as baking soda, and one pipet filled with phenol red, which stains clothes and skin. We made sure that the water and phenol red did not mix with the calcium chloride and the sodium bicarbonate.



When we had all the procedures finished we mixed the substances. Immediatley gas began to build up within the ziplock bag and the bag also began to heat up. When all the substances mixed the color became a bright orange-yellow color. After the reaction was done we opened the ziplock bag and wofted the substances. Imeediately it smelled of rubbing alcohal. We rcorded our data and observations and discarded the bag.





We then began to test different possible mixtures to figure out what substances created what reactions. The first mixture we tested was Calcium chloride mixed with water. With this mixture heat was produced and the calcium chloride did not dissolve, it was non-soluable. The second mixture we tested Sodium bicarbonate mixed with water. With this mixture a cold reaction was present. The third mixture we tested was Calcium chloride mixed with phenol red. With this mixture heat was produced and a rubbing alcohal scent was given off. The fourth mixture we tested was Sodium bicarbonate mixed with phenol red. With this mixture a cold temperature was produced. The fifth mixture we tested was Calcium chloride mixed with Sodium bicarbonate mixed with water. With this mixture heat, gas and bubbles were produced. The last and final mixture we tested was Calcium chloride mixed with Sodium bicarbonate mixed with phenol red. With this mixture heat was produced followed by cold temperature, gas and the mixture turned into a yellow color that smelled of rubbing alcohal.





1) Calcium Chloride mixed with a liquid (heat) and Sodium Bicarbonate mixed with a liquid


(cold)





2) No, we noticed the heat and cold again.





3) In the overall reaction the color was a bright yellow. Phenol red mixed with Sodium bicarbonate was a bright pink color. Phenol red mixed with Calcium chloride was a bright pink color.





4) No, because we observed color and temperature in different mixtures where gas was not present.





5) In the beginning we mixed the Sodium bicarbonate and Calcium chloride together with the absence of a liquid and nothing happened.





6) Evidence that supports that a new chemical substance that was created by the overall reaction was the production of gas, temperature, color and the appearence that there was less of the substances after the reaction.





7) Test Calcium chloride with other liquids to see if a reaction takes place.

8) Temperature changes do not always indicate chemical reactions because it might just be showing a chage of state.