Question

jerry conducted an experiment to determine whether salt added to a cup of water affects its freezing point. water samples were prepared containing equal quantities of water at the same temperature. each sample received a different amount of salt and was placed into a freezer. the length of time it took for each sample to freeze was recorded. which conclusion correctly interprets the information from jerrys table? effect of salt on the freezing point of water a conclusion cannot be made because the last sample did not freeze. doubling the salt doubled the time needed for the samples to freeze. an increase in the amount of salt lowered the time needed for the samples to freeze. an increase in the amount of salt increased the time needed for the samples to freeze.

Explanation:

Looking at the table, when the amount of salt (in grams) increases (from \(0\) to \(1.25\) to \(2.50\) to \(3.75\)), the freezing time (in minutes) also increases (\(48\) to \(68\) to \(75\) to \(88\)). Option A is incorrect because even without the last sample, there is a trend. For option B, when salt is doubled (e.g., from \(1.25\) to \(2.50\)), freezing time does not double (\(68\) to \(75\)). Option C is wrong as the data shows an increase in freezing time with more salt.

Answer:

An increase in the amount of salt increased the time needed for the samples to freeze.