Practice Quiz

MCAS Chemistry Exam Practice

Category - Chemistry

Start a Study Session Sign up for Question of the Day
Which of the following is an example of a physical change?
  1. Iron exposed to air produces rust.
  2. Hydrogen combined with oxygen forms water.
  3. Sulfur combined with oxygen produces sulfur dioxide.
  4. Liquid nitrogen exposed to air becomes nitrogen gas.
Explanation
Answer: D - Liquid nitrogen exposed to air becomes nitrogen gas.
Previous Next
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz