There are six indicators that a chemical reaction has occurred. Three of these are (1) a change in temperature, (2) presence of a flame, and (3) evolution of light (glowing). What are the other three? Color, Bubbles, Precipitation 2.
Suppose a household product label says the product contains sodium hydrogen carbonate (sodium bicarbonate). How would you test this material for the presence of Enhance? You would test it just like we tested the first part of the chart. One example would be When bubbles form. 3.You found a sample of a solution that as a faint odor resembling vinegar (an acid). To verify that this sample is indeed vinegar, you add a few drops of phenolphthalein to it and observe a pink color in the sample. Is your sample vinegar? Explain your answer. Phenolphthalein turns pink when it is mixed with a base.
This means that the sample Of solution we thought was vinegar is not vinegar. CONCLUSION(S): State your conclusion(s) here. (I point) Almost every mixture showed signs of a chemical reaction. When the chemical reactions occurred, the colors changed and bubbles formed.