Instructional Video

Precipitation Reactions

Two plus two is four, but how can two liquids come together and form one solid? Learn how ions can mix in solutions and fall out to form a solid in precipitation reactions through discussion and analysis of cations, anions, and precipitate reactions.

1 Collection 9 Views 7 Downloads NGSS: Adaptable
Additional Tags
Instructional Ideas
  • Show other reactions that form precipitates; perform one in lab
  • Research how some people used silver as medicine
  • Give learners sample equations to see if they can determine and explain which equations will produce precipitates in solutions
Classroom Considerations
  • To view the video, you must have a computer, access to the Internet, and a projection system
  • This video is hosted on YouTube
Pros
  • Includes a visual showing silver chloride forming as a precipitate in solution
  • Learners will understand what (aq) and (s) mean in chemical reactions
Cons
  • Video references alcohol right at the beginning, which might not be appropriate for high schoolers; "You're at dinner with your best friend. Fine conversation, fine wine, some bbq beef cheeks ..."
  • The only precipitate discussed is silver — forming silver chloride
NGSS