Chemistry Review Monday's Lesson

Multiple Choice

Which statement describes an action that most likely resulted in a chemical reaction?

• A pan of water was heated on a stove, and steam formed.

• A liquid was mixed with another liquid, and precipitate formed.

• A liquid was sprayed into the air, and a sweet odor was smelled.

• A child blew through a wand filled with soap, and bubbles were produced.

Multiple Choice

Which of these observations is an indication that a chemical reaction has occurred?

• Steam forms above boiling water.

• A solid forms when a clear solution is frozen.

• A solid forms when two clear solutions are mixed.

• Sugar crystals form on the sides of a boiling pot of sugar water.