Trini adds 10g of baking soda to 100g of vinegar. The mixture begins to bubble. When the bubbling stops, trini finds the mass of the resulting mixture. She determines its mass is 105g. Why has the mass changed?

Question

A. A gas has formed and left the mixture
B. Vinegar evaporated during the experiment
C. Mixtures are always less massive than their parts.
D. Matter was destroyed when vinegar reacted with baking soda.

Answer 1

Vinegar evaporated during the experiment

Answer 2

D is NOT correct

Answer 3

from 2013 and no right answers? im already failing this test

Answer 4

The baking soda reacts with the vinegar, producing a gas (the bubbling). When the bubbling stops, this indicates that the gas has evaporated from the mixture (left).
A. A gas has formed and left the mixture

Answer 5

Its B