As a substance changes from gas to liquid , how do the particles of the substance change ?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h