Question

A scientist combines two liquid substances and observes that a solid forms. Which statement likely provides the best description of what the scientist observed?

A. An electromagnetic force
B. A chemical reaction
C. Micropolarity
D. A physical change

Answer 1

The observation of a solid forming from the combination of two liquids most likely indicates a chemical reaction, where new substances with different properties are formed. Therefore correct option is B

Step-by-step explanation:

When a scientist combines two liquid substances and observes that a solid forms, this phenomenon likely describes a chemical reaction. A chemical reaction occurs when substances combine and transform into different compounds, often involving the formation of a new substance, such as a precipitate. This observation does not align with a physical change, which would involve a change in state, appearance, or separation of components without altering the chemical identity of the substances involved. The formation of a solid from liquids typically means a new substance with different chemical properties has been created, which is a clear sign of a chemical reaction.