🧪 Science with Sarah: Slushies at the San Antonio Zoo! 🍧

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👉 Watch the video of Sarah’s school science experiment here!

Hello parents, teachers and students! Sarah will be back in classrooms in the fall, but this summer they’re at the San Antonio Zoo. Today’s experiment will allow your kiddos to enjoy an icy treat and learn about states of matter!

Be sure to check out GMSA@9 on Wednesdays when Meteorologist Sarah Spivey does the demonstrations and explains the science behind it.

HERE’S WHAT YOU’LL NEED

  • A gallon ziplock baggie
  • A quart ziplock baggie
  • 1 cup apple juice
  • 1 cup water
  • 1 cup salt
  • 2 cups ice
  • Oven mitts

DO THE EXPERIMENT

  • Put the cup of apple juice in the quart ziplock baggie and add a couple drops of food dye. Try to suck out as much air as possible and seal the bag. Temporarily set it aside
  • Add 1 cup of water with 1 cup of salt to the gallon ziplock and then add ice
  • Place the smaller ziplock filled with juice into the larger ziplock
  • With your oven mitts on, shake the bags for a few minutes until the apple juice mixture becomes a slushie
  • Take the slushie bag out and quickly rinse it with cold water
  • Open the bag and enjoy!!

HOW IT WORKS

  • Salt water has a lower freezing point than juice! That means the salt water around the juice can get really, really cold while the juice freezes and forms a delicious slushie!

SCIENCE WITH SARAH

If you’d like Sarah to come to your school and conduct a science experiment live on KSAT, fill out this form. “Winners” are selected at random.