Students mixed different liquids in different beakers (beaker 1, beaker 2, beaker 3 and beaker 4) and listed their observations after each one.
1: The two liquids form a solid substance.
2: The two liquids start bubbling
3: The two colorless liquids turn yellow.
4: The red liquid and the blue liquid turned
Based on these observations, which beakers experienced a chemical change?
a. Beaker 1
b. Beaker 2
c. Beaker 3
d. Beaker 4