Answer :
In the given context, the sentence that represents the reasoning in the CER (Claim, Evidence, Reasoning) framework is:
(2) Acids have a pH below 7. The observed color change with the pH reading suggests solution A is acidic in nature.
Here's a breakdown to help you understand why sentence 2 is the reasoning part:
1. Claim (C): The claim is the statement that answers the experimental question. In this case, it is "Solution A is an acid" (mentioned in sentence 3).
2. Evidence (E): The evidence supports the claim with data or observations. Sentence 1 provides the evidence by stating that both the universal indicator paper and the pH meter indicated an acidic nature for solution A, showing a red color change and a pH reading of 3.
3. Reasoning (R): The reasoning connects the evidence to the claim by providing a logical explanation. Sentence 2 serves as the reasoning by stating that acids have a pH below 7, and the observed color change (to red) along with the pH reading of 3 suggests that solution A is acidic.
Therefore, sentence 2 is the reasoning part as it explains why the evidence (red color change and pH reading of 3) supports the claim that solution A is an acid.
(2) Acids have a pH below 7. The observed color change with the pH reading suggests solution A is acidic in nature.
Here's a breakdown to help you understand why sentence 2 is the reasoning part:
1. Claim (C): The claim is the statement that answers the experimental question. In this case, it is "Solution A is an acid" (mentioned in sentence 3).
2. Evidence (E): The evidence supports the claim with data or observations. Sentence 1 provides the evidence by stating that both the universal indicator paper and the pH meter indicated an acidic nature for solution A, showing a red color change and a pH reading of 3.
3. Reasoning (R): The reasoning connects the evidence to the claim by providing a logical explanation. Sentence 2 serves as the reasoning by stating that acids have a pH below 7, and the observed color change (to red) along with the pH reading of 3 suggests that solution A is acidic.
Therefore, sentence 2 is the reasoning part as it explains why the evidence (red color change and pH reading of 3) supports the claim that solution A is an acid.
