Chemistry Lab

In this lab you meed a baggie, one scoop of calcium chloride, one scoop of sodium bicarbonate, and one pipet of phenol red, and a pipet of water. The calcium chloride looked white and had tiny round balls in it. The sodium bicarbonate looked like a white powder. The phenol red was a red liquid. Take the calcium chloride and the sodium bicarbonate in one corner of the baggie, twist the corner and then put the water and the phenol red in the other corner so the liquids and solids have not touched yet. Shake the baggie so all of the contents mix together. Observations should be that the baggie got warm, the substance turned red to orange to yellow, the baggie then got cold and filled with air. after the baggie gets big open it and it smelt like gasy and eggs.

Trial observations:
Baking soda and phenol red: pink, cold, and no gas.
Calcium chloride and phenol red: orange, pink, no gas, warm, and smells.
Water and calcium chloride: warm, white, and no gas.
Water and baking soda: white, cold, and no gas.

Questions:
1. The calcium chloride caused the major temperature change from cold to warm.
2. The experiments that did not get warm were the ones without calcium chloride.
3. The color observed in the overall reaction was orange. The cause of the color change could not be found in the controlled experiments.
4. The temperature changed before the gas bubbles were formed.
5. All the experiments required liquid for a Reaction to occur.
6. Gas is the new substance formed when all chemicals are used in the experiment. Chemicals that are responsible are both solids and water.
7. Test different amounts of water with the calcium chloride to see if there is any changes.
8. A temperature change does not always indicate a chemical reaction because you could see a color change or a physical change.