The resource from Khan Academy and the Association of American Medical Colleges provides study content for the MCAT. This resource provides practice uestions related to phase changes during lyophilisation, or the process of freeze drying.

Find out your or your students' basic knowledge of concepts like matter, molecules and open and closed systems. Afterwards you can see how others answered the questions.

Read and fill in the blanks of this passage properties and changes. Each blank has a dropdown menu with choices. When you finish, click CHECK MY ANSWERS. If you pick a wrong answer, the right answer will be displayed along with your choice.