please help me with this challenge question, as i don't quite understand it.:
Yolanda makes this hypothesis: "If salt is added to water, then the water will boil at a lower temperature." She sets up and experiment to test her hypothesis, but discovers that it actually takes more heat to bring the saltwater to the boiling temperature. Her lab partner, Kevin says" Your hypothesis was wrong--no good at all!"
DO YOU AGREE OR DISAGREE WITH KEVIN AND WHY???
please , help me...
I would disagree with Kevin, because your hypothesis is an educated guess. For a hypothesis there is no yes or no answer. Her hypothesis may be incorrect, but you must remember it is simply a guess, if she had prior knowledge to believe the water would become cooler, then she would be correct in hypothesizing such.
Hope this helps! :)
I would agree with lisa because i think that for a hypothesis ther is no right or wrong answerw. It is simply an educated on the event that is going happen.
I love muffens!!!!!!!!!
no
i tried the salt in boiling water it dosent work it just gave taste to the heated water
Kevin was correct that her hypothesis was incorrect, but her hypothesis wasn't not useful. All hypothesis's are meant to be learned from, Yolanda learned from her hypothesis. Kevin shouldn't be so rude about Yolanda's hypothesis being incorrect. People don't know everything. That's what experiments where made for, to learn from both mistakes, and to expand your knowledge.
To determine if you agree or disagree with Kevin's statement, it's important to understand the concept of boiling point elevation caused by the addition of salt to water. The boiling point is the temperature at which a liquid vaporizes and turns into gas. In pure water, the boiling point is 100 degrees Celsius (or 212 degrees Fahrenheit) at sea level.
When salt is added to water, it raises the boiling point of the solution. This phenomenon is known as "boiling point elevation." The reason behind this is that the salt particles disrupt the normal liquid-to-gas phase transition by reducing the vapor pressure of the water. As a result, it requires more heat energy to reach the elevated boiling point.
Based on Yolanda's hypothesis, she expected the water to boil at a lower temperature when salt is added. However, her experimental observation contradicts this initial expectation. It actually took more heat to bring the saltwater to the boiling temperature, indicating that the boiling point was higher than that of pure water.
Now, let's consider whether you agree or disagree with Kevin's statement that Yolanda's hypothesis is "no good at all." In science, an experiment does not necessarily prove a hypothesis to be correct or incorrect. Yolanda's experiment provided valuable information indicating that her hypothesis was inaccurate, but it does not render it completely useless.
To form a more accurate conclusion, additional experiments and data analysis are necessary. Yolanda's hypothesis can be refined, taking into account the observed boiling point elevation caused by the addition of salt to water. The revised hypothesis can state that "If salt is added to water, then the boiling point of water increases." This new hypothesis aligns with the experimental findings and can provide a foundation for further investigations.
In summary, you would disagree with Kevin's statement that Yolanda's hypothesis is "no good at all." Although her original hypothesis was disproven by the experimental results, this is a normal aspect of the scientific method. Yolanda's observations serve as valuable insights, allowing for the refinement and improvement of her hypothesis to better reflect the actual relationship between salt and the boiling point of water.