What evidence demonstrates that a chemical change has occurred? A A color change occurs.
B A gas is formed.
C A solid is dissolved,
D A precipitate is formed.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic