1. Intro to General Chemistry

Which actions are evidence that a chemical reaction has occurred? Check all that apply.

Which process is a chemical change? Is it burning a match, boiling water, melting ice, or breaking glass?

Which of the following is a physical change?

Which of the following represents a reversible change?

In physical changes, substances might change in ________ but not in ________.

Which best explains why making a pancake from batter is an example of a chemical change?

Where are chlorofluorocarbons found? 

 A. Coolants 

 B. The atmosphere 

 C. Solvents 

 D. All of the above

When substances go through chemical changes, which of the following will always happen?

When baking soda and vinegar react, the surface bubbles. What does this most likely indicate?

Which property of physical changes explains why matter is conserved in a physical change?

If there are 8 g of a substance before a physical change, how much will there be afterwards?