Use the image to answer the question Cassie is working on an investigation for science. She mixes a yellow liquid and a solid chemical in a flask. Which answer best describes her results?

A.
A physical change occurred because the substances kept their properties.

B.
A physical change occurred because the liquid turned yellow.

C.
A chemical change occurred because a gas was formed from a chemical reaction.

D.
A chemical change occurred because the liquid was boiled.

PLEASE HURRY

C. A chemical change occurred because a gas was formed from a chemical reaction

B A physical change occurred because the liquid turned yellow.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: