Evidence of New Substance Formed Practice Test

Based on the observations, Student A says, “A new substance formed because the mixture changed from clear to green.” The student mixed 50 mL of blue sports drink with 50 mL of yellow sports drink. The temperature stayed at 20°C, no bubbles formed, and the smell stayed the same. Is Student A’s reasoning correct?

A student says, “A new substance formed because the mixture got warmer.” In the investigation, students mixed 100 mL of cold water (10°C) with 100 mL of hot water (50°C). The final temperature was 30°C, and there were no bubbles, no new smell, and no solid formed. Based on the evidence, is the student’s reasoning correct?​