Question
Kevin's Experiment
Kevin's Experiment
Kevin sets up a simple science experiment. He fills a test tube with sodium hydroxide solution. Then, he ties a string around the test tube and pulls it tight under the stopper of a flask containing a copper sulfate solution. When Kevin releases the string, the test tube falls into the copper sulfate solution and the two solutions combine. A diagram of the setup is shown.
The setup on the left shows a flask partially filled with copper sulfate solution closed with a stopper. Inside the closed flask is a small test tube filled with sodium hydroxide solution attached to a string hovering above the copper sulfate solution. The flask sits on an electronic balance that shows the mass of the setup is 67.25 grams. An arrow pointing to the right shows the solutions mix thoroughly. The setup on the right shows the closed flask with sodium sulfate solution inside. The small test tube is in the solution and pieces of solid copper hydroxide have formed. The flask sits on an electronic balance that shows the mass of the new setup is unknown.
Read Moreā¼
Constructed Response Question
Explain a reason Kevin used a stopper in his experimental setup AND what could happen to the mass of the products of this reaction if the stopper were not used. make itr look like it was written by a 7th grader
Kevin's Experiment
Kevin sets up a simple science experiment. He fills a test tube with sodium hydroxide solution. Then, he ties a string around the test tube and pulls it tight under the stopper of a flask containing a copper sulfate solution. When Kevin releases the string, the test tube falls into the copper sulfate solution and the two solutions combine. A diagram of the setup is shown.
The setup on the left shows a flask partially filled with copper sulfate solution closed with a stopper. Inside the closed flask is a small test tube filled with sodium hydroxide solution attached to a string hovering above the copper sulfate solution. The flask sits on an electronic balance that shows the mass of the setup is 67.25 grams. An arrow pointing to the right shows the solutions mix thoroughly. The setup on the right shows the closed flask with sodium sulfate solution inside. The small test tube is in the solution and pieces of solid copper hydroxide have formed. The flask sits on an electronic balance that shows the mass of the new setup is unknown.
Read Moreā¼
Constructed Response Question
Explain a reason Kevin used a stopper in his experimental setup AND what could happen to the mass of the products of this reaction if the stopper were not used. make itr look like it was written by a 7th grader
Answers
GPT-4o mini
In Kevin's experiment, he used a stopper in his setup to keep the copper sulfate solution and the sodium hydroxide solution contained inside the flask. This is important because it prevents any of the solutions or gases from escaping into the air while the reaction is happening. If the stopper wasn't used, some of the solutions might spill out or react with outside air, which could change the outcomes of the experiment.
If the stopper were not used, the mass of the products after the reactions might be less than expected. This is because some of the chemicals could escape, especially if any gas was produced during the reaction or if the solutions spilled out. In a science experiment, you want to keep track of everything that is happening, so being careful with the setup is super important!
If the stopper were not used, the mass of the products after the reactions might be less than expected. This is because some of the chemicals could escape, especially if any gas was produced during the reaction or if the solutions spilled out. In a science experiment, you want to keep track of everything that is happening, so being careful with the setup is super important!