Question

One student filled two clean jars with hot water. Baking soda was added to water in both the Jars and stirred until no more baking soda dissolved in the water. Small

weights were tied to two ends of a thread and the ends were dipped into the two jars as shown below.

After two or three weeks the student observed a white solid material growing down from the middle of the thread between the two jars. The student's experiment demonstrates
that
A) Wmen water evaporates, it leaves solid minerals behind
B) When water is left undisturbed, it turns into solid minerals
C) when water reacts with baking soda, it freezes into solid minerals
D) When baking soda reacts with water, it converts gases into minerals

Answer 1

A

Step-by-step explanation:

Heated water will hold a higher amount of dissolved material than cooler water. As water evaporates the amount of dissolved material that can stay dissolved decreases. What cannot remain dissolved precipitates onto a point of nucleation. In this case the string.