Question
Part A
Multiple Choice Question
While working on an activity to investigate physical and chemical reactions, a student mixes two clear liquids in a beaker. When the two clear liquids mix, the result is a mixture that contains a clear liquid and an orange solid precipitate.
Part A: The student concludes that a chemical reaction has occurred. Which piece of evidence best supports her claim?
A.
The resulting chemical turned a different color than the initial chemicals.
B.
The resulting chemical changed size.
C.
The resulting chemical has changed shapes.
D.
The resulting chemical changed temperature.
Part B
Multiple Choice Question
Part B: If the resulting mixture is filtered, separating the orange precipitate from the resulting liquid, what has occurred?
A.
The resulting mixture changed form.
B.
A chemical change occurred to the mixture.
C.
The resulting mixture experienced a physical change.
D.
A change of state has occurred to the mixture.
Multiple Choice Question
While working on an activity to investigate physical and chemical reactions, a student mixes two clear liquids in a beaker. When the two clear liquids mix, the result is a mixture that contains a clear liquid and an orange solid precipitate.
Part A: The student concludes that a chemical reaction has occurred. Which piece of evidence best supports her claim?
A.
The resulting chemical turned a different color than the initial chemicals.
B.
The resulting chemical changed size.
C.
The resulting chemical has changed shapes.
D.
The resulting chemical changed temperature.
Part B
Multiple Choice Question
Part B: If the resulting mixture is filtered, separating the orange precipitate from the resulting liquid, what has occurred?
A.
The resulting mixture changed form.
B.
A chemical change occurred to the mixture.
C.
The resulting mixture experienced a physical change.
D.
A change of state has occurred to the mixture.
Answers
GPT-4o mini
### Part A
The best piece of evidence that supports the student's claim that a chemical reaction has occurred is:
**A. The resulting chemical turned a different color than the initial chemicals.**
The formation of a colored precipitate from clear liquids is often an indication of a chemical reaction, as it suggests that new substances have formed.
### Part B
If the resulting mixture is filtered, separating the orange precipitate from the resulting liquid, the correct answer is:
**C. The resulting mixture experienced a physical change.**
Filtration is a physical process that separates components of a mixture based on differences in their physical properties (such as solubility) without changing the chemical identity of the substances.
The best piece of evidence that supports the student's claim that a chemical reaction has occurred is:
**A. The resulting chemical turned a different color than the initial chemicals.**
The formation of a colored precipitate from clear liquids is often an indication of a chemical reaction, as it suggests that new substances have formed.
### Part B
If the resulting mixture is filtered, separating the orange precipitate from the resulting liquid, the correct answer is:
**C. The resulting mixture experienced a physical change.**
Filtration is a physical process that separates components of a mixture based on differences in their physical properties (such as solubility) without changing the chemical identity of the substances.