(B) Atoms in the reactants are rearranged to form new substances.
<u>Here Are More Answers:</u>
--> Which event is most likely an example of a chemical reaction?
(A) Event 1 because there is a color change.
--> Which indicator most likely suggests that a chemical change is taking place?
(B) change of color
--> Which is the most important question for deciding if a chemical reaction has occurred?
(B) Was any heat energy given off?
--> Among these processes, which is the slowest chemical reaction?
(C) tarnishing of silver
--> Which substances are the reactants?
(C) HCl and NaOH
--> Burning a piece of wood in fire can be best described as a
(C) chemical change because the atoms in wood and oxygen are rearranged.
--> A solid is placed in a solution. Which observation most likely indicates that a chemical reaction has occurred?
(C) The solid has bubbles forming on its surface.
--> During an experiment, Mr. Lehman tells his students to be alert for signs that an endothermic reaction is happening. Which of the following scenarios would his students most likely observe?
(A) A test tube becomes cool to the touch.
--> Which statement about the two images is true?
(B) Image A shows a chemical reaction, and image B shows a physical change.
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