Question

iv. cer practice
like most students, megan really enjoyed doing labs in science class. one day her teacher allowed the class to design their own experiment. megan was excited and could not wait to get started. her task was to see if she could blow up a balloon using chemicals. megan knew that baking soda and vinegar would fizz and produce a gas. however, her teacher did not give her any vinegar to use, only dilute hydrochloric acid (hcl). megan thought she could use the hcl in place of the vinegar and wanted to see if mixing them would cause the balloon to inflate. megan put on her safety gloves and got to work. she put hcl in an erlenmeyer flask and the baking soda in a balloon. she stretched the opening of the balloon over the top of the flask and held the balloon to the side, so the baking soda did not spill out. megan then lifted the balloon and the two chemicals mixed as the baking soda fell into the flask. megan was all smiles when she saw the balloon inflating. it worked just like she had expected.
construct an explanation using evidence (in the claim - evidence - reasoning format) for whether megan followed all safety rules. include evidence from the passage to support your claim.
claim:

evidence:

reasoning:

Explanation:

The claim should state whether Megan followed all safety rules. Evidence is details from the passage about her actions related to safety. Reasoning connects the evidence to the claim, explaining why the evidence supports or refutes the claim.
Claim: Megan did not follow all safety rules.
Evidence: The passage only mentions Megan putting on safety gloves. There is no mention of wearing goggles to protect her eyes from possible splashes of hydrochloric acid.
Reasoning: In a chemistry experiment involving acids like hydrochloric acid, eye - protection is essential as the acid can cause serious harm if it comes into contact with the eyes. Since there is no evidence of Megan wearing goggles, she did not follow all safety rules.

Answer:

Claim: Megan did not follow all safety rules.
Evidence: Only safety gloves mentioned, no goggles.
Reasoning: Eye - protection crucial with acids, no goggles means not all rules followed.