Science Will Save the World! Episode 3: We’ve Got Chemistry! (Acid and Base Experiment) with Jessie Rack

Science Will Save the World! Episode 3: We’ve Got Chemistry! (Acid and Base Experiment)

With Jessie Rack

Today we are exploring the wonderful world of chemistry with an acid-base experiment. Using household ingredients, we create a reaction that (if we’re lucky) makes a Ziploc bag explode!

Ingredients:

1/2 cup Vinegar

2 Tablespoons Baking Soda

Ziploc bag Paper towel (ripped into a square)

3/4 cup water

Food coloring (optional)

Vocabulary:

Atom – the teeny-tiny building blocks that make up all matter in the universe. Kind of like Legos.

Ion – atoms or groups of atoms with an electrical charge, either positive or negative.

Acids and Bases – special chemicals that contain lots of ions, which makes them want to react with each other. Acids have lots of positive ions; bases have lots of negative ions.

*** Higher-Level Science Explanation:

What’s really happening here is a two-part reaction.

n step one, vinegar (acetic acid) reacts with the baking soda (sodium bicarbonate) to form sodium acetate and carbonic acid.

In step two, the carbonic acid immediately falls apart into carbon dioxide and water. The bubbles you see are the carbon dioxide leaving the solution!

Equation: (for proper notation, see https://www.thoughtco.com/equation-fo…)

Step 1: Sodium bicarbonate + acetic acid → sodium acetate + carbonic acid NaHCO3 + HC2H3O2 → NaC2H3O2 + H2CO3

Step 2: Carbonic acid → water + carbon dioxide H2CO3 → H2O + CO2

Once again, this production is brought to you by the University of Arizona’s Community and School Garden Program. And Penny!

Science Will Save the World! Episode 1: How to Make a Homemade Magnifying Glass

Science Will Save the World! Episode 1: How to Make a Homemade Magnifying Glass

With Jessie Rack

Stuck at home? Why not do some science? Today, with the help of Penny the Cat, I demonstrate how to make a homemade magnifying glass with things you probably have around the house. I’ll also explain how it works – through the science of vision and light, and the power of lenses.

Come for the science, stay for the awkward sound effects and the time Penny knocks stuff off the couch. This production brought to you by the University of Arizona’s Community and School Garden Program. And Penny!

 

Who Pooped in the Garden? Worm Science with Jessie Rack

Who Pooped in the Garden? Worm Science with Jessie Rack

Regeneration! Multiple hearts! High-quality poop! Earthworms are amazing creatures and a super important part of the garden ecosystem.

Ecologist Jessie Rack is here to shout about earthworm science in the garden! Jessie is the Environmental Education Program Coordinator of the University of Arizona’s Community and School Garden Program.

Check them out at: https://schoolgardens.arizona.edu/ Jessie’s website: https://jessierack.com/