Grow an Alum Crystal

This Grow an Alum Crystal lesson plan also includes:

What an exciting lab experiment to conduct with your high school chemistry class! Crystals are formed naturally in the environment. However, allow your blossoming chemists to create their own unique crystals using alum and water. You may follow the directions provided within this experiment to preserve their crystals for posterity. 

24 Views 27 Downloads NGSS: Adaptable
Classroom Considerations

  • Goggles should be worn to avoid eye irritation
  • Alum crystals can be finicky; assist pupils with the experiment to ensure success
Pros

  • Crystal growth is exciting to witness when performed properly
  • Students are engaged throughout the experiment
  • Alum is non-toxic; this is considered a safer alternative to chemical experiments
Cons

  • None
NGSS