Mixing baking soda and vinegar makes the temperature of the solution decrease and release carbon dioxide. Which conclusion about this investigation is not valid?
Mixing the chemicals caused them to absorb heat. A chemical reaction took place. New elements were formed. The procedure caused a gas to be formed.
Question: Mixing baking soda and vinegar makes the temperature of the solution decrease and release carbon dioxide. Which conclusion about this investigation is not valid?
A. Mixing the chemicals caused them to absorb heat.
B. A chemical reaction took place.
C. New elements were formed.
D. The procedure caused a gas to be formed.
Answer: