Respuesta :

When sodium hydroxide is dissolved in water within a beaker, it is observed that the beaker becomes warm due to chemical reaction.

WHAT IS A CHEMICAL REACTION:

A chemical reaction is a type of reaction that involves the rearrangement of atoms to form new substances.

The indications that a chemical reaction has occurred is:

  1. Color Change.
  2. Production of an odor.
  3. Change of Temperature.
  4. Evolution of a gas (formation of bubbles)
  5. Precipitate (formation of a solid)

Therefore, When sodium hydroxide is dissolved in water within a beaker, it is observed that the beaker becomes warm due to chemical reaction.

Learn more about chemical changes at: https://brainly.com/question/2494343