Hello parents, teachers and students! If youāre looking for fun way to explore states of matter and solubility this experiment is for you! Today weāre doing a fun sensory experiment with the folks at Reaching Maximum Independence -- a local non-profit which helps people with Intellectual Developmental Disabilities live life to their fullest potential!
Be sure to check out GMSA@9 on Wednesdays when Meteorologist Sarah Spivey does the demonstrations and explains the science behind it.
Science with Sarah: Invite KSAT to your school for live science experiments. (KSAT)
HEREāS WHAT YOUāLL NEED
A large container
2 cup corn starch
1 cup water
Food dye (optional)
MAKE THE OOBLECK
Meteorologist Sarah Spivey makes oobleck (Copyright KSAT 2023 - All rights reserved)
STEP 1: Measure out 1/2 cup of water and add the food dye to the water
STEP 2: In the large container, place 1 cup of cornstarch
STEP 3: Pour the colored water into the large container with the cornstarch and mix using your hands (NOTE: This will be messy! Make sure to have plenty of paper towels nearby and maybe use an apron to cover your clothes!)
STEP 4: Try compressing the oobleck in your hands into a ball. Observe how it quickly āmeltsā into a liquid.
Ball the oobleck in your hands and feel it become a solid (Copyright KSAT 2023 - All rights reserved)Watch as the oobleck quickly turns back into a liquid (Copyright KSAT 2023 - All rights reserved)
STEP 5: You can store your oobleck in the fridge to use for later. When youāre ready to dispose of your oobleck, throw it away in the trash. Large amounts of cornstarch should not go down pipes.
HOW IT WORKS
Because cornstarch is not totally soluble in water, it can make a non-Newtonian fluid when combined with water.
A non-Newtonian fluid does not follow Newtonās laws of viscosity. That may be a mouthful, but basically oobleck it is a fluid that can exist both as a solid and a liquid depending on how much force you use!
Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017.
Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News.
When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.