Chem in a bag

what you used?

baggy

pipet

water

sodium bicarbonate

calcuim chroride

phenol red

Obbservations

Alone all of the substances were obbserved. The calcium chloride was white. It was in the form of little balls or beads. There was no smell to the substance. the sodium bicarbonate was also white. It was a powdery substance with no smell. The phenol red was a koolaid red. It had an oder of alcohol .


what did you do?


In a snack baggy I combined one spoon of Calcuim chloride, one spoon of sodium bicarbonate, one pipet of phynal red, and one pipet of water. We put the calcium chroride and sodium bicarbonater in one corner and water and phenal red in the other. Shut the baggy so that no air is trapped inside. Combime the two combinations together. Set the baggy in the palm of your hand. shake the baggy constantly.

what happened?

Together the substances turned a yellow color. The chemical inside the baggy stuck to the sides of the baggy. It started heating up, and the baggy stated to expand. Some of the classes baggys blew up because of the air preasure in the baggy. The air inside the baggy smelled like paroxide.

post lab questions

1.Calcium Choride with a liquid

2.no

3.from red to yellow, the phenol red, the calcium chloride, and the sodium bicarbonatemixed together

4.no, you don't have to have the the temp./color changes to form the gas bubbles

5.at the begining we kept them seperate and nothing happened so yes, we combined phenol red, calcium chloride, and soduim bicarbonate and it had a similar reaction

6. it changed colors and had a new odor, the phenol red, the phenol red, the cacium chloride, and the sodium bicarbonate

7.combime the calcium chloride with another liquid other than the phenol red to see if it has the same reaction.

8.yes, because heat is formed by a chemical reaction