Tara's lab group was investigating changes in matter. They measured the properties of a liquid sample, such as its melting point, density, and boiling point. They then passed an electric curren
through the liquid and observed the formation of bubbles from each of the electrical contacts. Th
remaining liquid appeared unchanged and had the same properties as before the electric current
was applied. When the gases were tested, each gas had a different set of properties.
Based on these observations, what can Tara's group infer about the original liquid?
A. It was a colloid.
B. It was a pure substance.
C. It was a solution.
D. It was a suspension.