Which of these most likely indicates that a chemical change has happened? A. Spoiled milk gives off a strong oder. B. Candle wax melts when it is heated. O C. Solid ice forms on a lake in winter. D. A guitar string vibrates when it is plucked.​

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?