Hooked On Science – Create a Colorful Disc Using a Coffee Filter

SCIENCE SAFETY
PLEASE follow these safety precautions when doing any science experiment.
• ALWAYS have an adult present.
• ALWAYS wear the correct safety gear while doing any experiment.
• NEVER eat or drink anything while doing any experiment.
• REMEMBER experiments may require marbles, small balls, balloons, and other small parts. Those objects could become a CHOKING HAZARD. Adults are to perform those experiments using these objects. Any child can choke or suffocate on uninflated or broken balloons. Keep uninflated or broken balloons away from children.

INGREDIENTS
• 2 Rubber Bands
• Colorful Assortment of Permanent Markers
• 90% Isopropyl Alcohol
• Water
• 2 Coffee Filters
• 2 Transparent Cups

INSTRUCTIONS
STEP 1: Using the rubber bands secure one coffee filter to the opening of each transparent cup.
STEP 2: Using the colorful assortment of permanent markers create multiple circles on the coffee filters.
STEP 3: Add drops of water to one of the coffee filters and observe. Remove your creation from the transparent cup once the creation completely dries. Describe and classify what you observe by its observable properties.
STEP 4: Add drops of isopropyl alcohol to the other coffee filter and observe. Remove your creation from the transparent cup once the creation completely dries. Describe and classify what you observe by its observable properties.

EXPLANATION
The ink used to engineer a permanent marker does not dissolve, or is insoluble, in water, which is why, when you added water on the coffee filter, the ink stayed in place. When you add isopropyl alcohol to the coffee filter the colors spread out crcoffeeating a colorful creation. The reason, the isopropyl alcohol dissolves the ink in the permanent marker. The ink is soluble when exposed to isopropyl alcohol.

Download these instructions here and check the Hooked on Science page for more science experiments.

Categories: Education, Hooked On Science