Braker A contains a clear and colorless liquid. Beaker B contains a clear, pale yellow liquid. When a student pours the liquid in Beaker A into Beaker B, a blue solid forms and settles to the bottoms or the breaker. Has a chemical reaction taken place? Explain completely your evidence for your answer, using some of scientific terms you have learned in this unit
Yes, a chemical reaction has taken place. The formation of a blue solid indicates a chemical change has occurred, as a new substance with different properties has been formed. The color change from clear and colorless to blue is evidence of a chemical reaction as well.
The reaction likely involved a precipitation reaction, where two soluble reactants combine to form an insoluble product. The clear and colorless liquid in Beaker A likely contained a cation that reacted with an anion in the clear, pale yellow liquid in Beaker B to form the blue solid.
The formation of a solid is also evidence of a chemical reaction, as the particles in the reactants have rearranged to form a new substance with a different chemical composition. Additionally, the settling of the solid to the bottom indicates that it is a separate phase from the liquid reactants.
Overall, the formation of the blue solid, the color change, and the settling of the solid all indicate that a chemical reaction has taken place between the liquids in Beaker A and Beaker B.