With only a few common kitchen items, kids can explore density and the reaction of adding an emulsifier (dish soap) to the experiment. Why don’t oil and water mix? She is passionate about exploring educational approaches that promote positive children's mental health practices and encourage a love of learning in all students. Glass Jar with a lid (a pint canning jar works great) Add a few drops of food coloring to the water and stir until combined. Observe what happens to the Oil and the Water. Materials I can still remember as a kid my grandmother saying, “you get on like oil and water!” This was usually in response to the latest squabble I was in with my sister. Baby oil (other liquid oils work too, but baby oil is clear, Food coloring (minimum 2 colours, start with primary colours), Dropper (like a medicine dropper, pipette or even a syringe). This is because of the chemistry of the oil, water and soap molecules. Ready to take this experiment to a new level? It breaks down the water bubbles into smaller bits, but it still does not mix and dissolve. Pour about 2 tablespoons of the coloured water along with the 2 tablespoons of cooking oil into the … Print Objects will float in water if their density is less than 1 g/mL. When you add the food coloring to the oil it will not mix. Have you ever heard the saying, “Oil and water don’t mix”? Kim is the author of the kids craft book, Fun & Easy Crafting with Recycled Materials. We love how easy this simple science experiment is – and kids will love to observe or make their own fireworks in a jar too! Mix secondary colours. See our Moon Dough link in the next section. From a very early age I knew oil and water don’t mix thanks to these types of comments. Joining gives you access to a library of free materials, in addition to regular emails from STEAM Powered Family featuring articles and products. Adding in the magic of colour mixing takes this simple science experiment from “meh” to “WOW”. There are two reasons for this. Or mix 3 primary colours to create a tertiary colour. What happens if you change the temperature of the water? The Science Behind Mixing Oil and Water This is such a simple science experiment, but it teaches big, important concepts! Step 7 – Tighten the lid back on the jar and shake again for another 15-20 seconds. Start by filling the jar with 1 cup of water. Your email address will not be published. This is because the molecules of oil are larger than the molecules of water, so oil particles take up more space per unit area. Food coloring is water-based so it mixes with the water. Your email address will not be published. On the other hand we have oil molecules which are non-polar. Securely tighten the lid on the jar and shake it for 15-20 seconds. Shelley has a BSc Psychology specialization, with post grad research and studies in memory, cognition, learning and childhood mental health. Whisk the food coloring into the oil. For another fun experiment, make some oobleck! This is because of the density of the two liquids. Disclaimer: This site contains affiliate links for which we may earn a commission on qualifying purchases. The Science – Why don’t oil an water mix? Now check your email to confirm your subscription. Let’s say you have two objects and they are the same size. Comment document.getElementById("comment").setAttribute( "id", "a6aa9ed798500cd9ed0624bb167d4c02" );document.getElementById("c92d7e2343").setAttribute( "id", "comment" ); You’ll find all kinds of fun kids crafts, activities and even recipes for kids! Oil and water do not mix. You do not need a lot like we used – you can even just use about 4 tablespoons … Step 5 – Set the jar down and watch the liquid for a minute or two. Build a Homemade Lava Lamp using one of 5 different approaches, including a glow in the dark version. Then add 2-3 drops of blue food colouring to the other cup. The second thing you will observe is that adding dish soap to the mixture changed the results of the experiment. 2 teaspoons Dish Soap Set the jar down and watch the liquid for a minute or two. © Cool Science Experiments HQ, Hi ! All in one simple, quick experiment that is perfect preschool and early elementary. Soap is made of molecules that have a hydrophilic (“water-loving”) end and a hydrophobic (“water-fearing”) end. Overview: The following easy-to-set-up experiment involves mixing equal parts oil and water and then adding a drop of food coloring. 2. ","position":4,"name":"Securely tighten the lid on the jar and...","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_4"},{"@type":"HowToStep","text":"Set the jar down and watch the liquid for a minute or two. Water molecules are polar and one end has a slight negative charge, the other a slight positive charge. To get water and oil to mix we need an emulsifier and guess what? There was an error submitting your subscription. Get weekly science experiments delivered to your inbox! This gives us really good experiment, This was the best science fair project ever, Your email address will not be published. ","position":7,"name":"Tighten the lid back on the jar and...","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_7"},{"@type":"HowToStep","text":"Set the jar down and watch the liquid for a minute or two. Set the jar down and watch the liquid for a minute or two. June 15, 2020 Filed Under: Activities & Experiments Tagged With: science, Water. With a focus on STEM and STEAM (Science, Technology, Engineering, Arts and Math), and positive children’s mental health practices, our goal is to foster resilient, healthy minds. 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