Question
Jason mixed a solid powder and a liquid in a beaker and observed the results. Which observation would indicate that a new substance was likely produced?
A) The powder sank to the bottom of the beaker.
B) The powder disappeared in the liquid.
C) The sides of the beaker began to feel warm.
D) A thick, glue-like mixture formed in the beaker.
A) The powder sank to the bottom of the beaker.
B) The powder disappeared in the liquid.
C) The sides of the beaker began to feel warm.
D) A thick, glue-like mixture formed in the beaker.
Answers
GPT-4o mini
The observation that would indicate a new substance was likely produced is C) The sides of the beaker began to feel warm. This suggests an exothermic reaction, which is indicative of a chemical change where new substances are formed. While options A and D could also suggest some changes in a mixture, they do not strongly imply that a new substance has been created. Option B, where the powder disappears, might indicate a dissolving process, which does not necessarily produce a new substance. Therefore, option C is the most indicative of a chemical reaction occurring.