Fill the larger cup/bowl/petro dish about 1 inch deep with baby oil. Add a few drops of food coloring to the water and stir until combined. Add oil into a bowl. I hope you enjoyed the experiment. Food coloring is water-based so it mixes with the water. First, it is easy to observe how oil and water do not mix, no matter how much they are stirred. Before conducting any of the experiments found on CoolScienceExperimentsHQ.com you must get an adult's permission and help, follow the instructions provided as written and wear the appropriate safety gear (protective eyewear, clothing, etc). Water has a density of 1 g/mL (g/cm3). 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. This is because the molecules of oil are larger than the molecules of water, so oil particles take up more space per unit area. Instead, the oil slowly rises to the top of the water. Here we are constantly looking for ways to foster curiosity and a love of learning in our children, regardless of ability or history. 2 teaspoons Dish Soap That’s because water is heavier than oil. 1 cup Oil (we used vegetable oil) Build a Homemade Lava Lamp using one of 5 different approaches, including a glow in the dark version. In this experiment we use the incredible science behind oil and water repelling each other to also learn some colour theory. Here are some printable instructions: {"@context":"http:\/\/schema.org","@type":"HowTo","name":"Mixing Oil & Water Science Experiment","author":{"@type":"Person","name":"Cool Science Experiments HQ"},"datePublished":"2020-02-14","image":["https:\/\/coolscienceexperimentshq.com\/wp-content\/uploads\/2015\/10\/Mixing-Oil-Water-Step-3-320x320.jpg","https:\/\/coolscienceexperimentshq.com\/wp-content\/uploads\/2015\/10\/Mixing-Oil-Water-Step-3-320x240.jpg","https:\/\/coolscienceexperimentshq.com\/wp-content\/uploads\/2015\/10\/Mixing-Oil-Water-Step-3-480x270.jpg","https:\/\/coolscienceexperimentshq.com\/wp-content\/uploads\/2015\/10\/Mixing-Oil-Water-Step-3.jpg"],"totalTime":"PT0S","supply":["Glass Jar with a lid (a pint canning jar works great)","1 cup Water","Food Coloring","1 cup Oil (we used vegetable oil)","2 teaspoons Dish Soap"],"step":[{"@type":"HowToStep","text":"Start by filling the jar with 1 cup of water. Observe what happens to the oil and the water. June 15, 2020 Filed Under: Activities & Experiments Tagged With: science, Water. From a very early age I knew oil and water don’t mix thanks to these types of comments. You do not need a lot like we used – you can even just use about 4 tablespoons of oil for a thin layer. Have fun and stay safe! When you add the food coloring to the oil it will not mix. Securely tighten the lid on the jar and shake it for 15-20 seconds. Add 2-3 drops of yellow food colouring to one cup. What happens if you change the temperature of the water? Get weekly science experiments delivered to your inbox! Without soap, water and oil cannot interact because they are unlike molecules. Read on for some extension activities that take this activity to the next level! Expand this further by mixing or trying other oils – does it act the same way? Now clean the dropper in the clean water cup. Try this fun and easy Grow a Rainbow Experiment. She is a mom of two that loves to share easy crafts, activities and recipes for kids. The colours will eventually start to mix creating a whole new colour! Pour about 2 tablespoons of the coloured water along with the 2 tablespoons of cooking oil into the … If one object is heavier, then it is denser and if the other object is lighter, then it is less dense. Water is made of polar molecules that can dissolve other polar molecules. ","position":2,"name":"Add a few drops of food coloring to...","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_2"},{"@type":"HowToStep","text":"Pour 1 cup of Oil into the jar. Step 7 – Tighten the lid back on the jar and shake again for another 15-20 seconds. Let’s say you have two objects and they are the same size. There was an error submitting your subscription. Fun & Easy Crafting with Recycled Materials. Oil and water do not mix. We love how easy this simple science experiment is – and kids will love to observe or make their own fireworks in a jar too! Set the jar down and watch the liquid for a minute or two. ","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. What you will see in this experiment is that oil is less dense than water, so it will float on top of the water. It’s best to whisk and add the oil straight into the jar or vase before the food coloring settles on the bottom of the bowl or or it may not form droplets when you add it to the water. The detergent molecules can form bonds with both water and oil molecules. All activities should be supervised by an adult. Your email address will not be published. Whisk the food coloring into the oil. Oil is less dense than water. This is because oil is made of carbon and hydrogen atoms that … We have an experiment for that! The polarity means those water molecules can form hydrogen bonds and attach to other molecules that are also polar, this includes other water molecules. ","position":5,"name":"Set the jar down and watch the liquid...","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_5"},{"@type":"HowToStep","text":"Next, take the lid off the jar and squirt in 1-2 teaspoons of dish soap. Now check your email to confirm your subscription. Next, take the lid off the jar and squirt in 1-2 teaspoons of dish soap. While doing this experiment the coloured oils will form into bubbles that float in the water. Try this experiment in a mason jar. See our Terms, Disclosures and Conditions of Use for more details. All you need is: Fill the small cups with about 2 to 3 tablespoons of water. Joining gives you access to a library of free materials, in addition to regular emails from STEAM Powered Family featuring articles and products. Embracing Science, Technology, Engineering, Arts and Math in education. What colours do you get? Water molecules are polar and one end has a slight negative charge, the other a slight positive charge. Ready to take this experiment to a new level? Science experiments delivered to your inbox each week! Once you add the oil to the water, the food colored droplets start to drop down since they are heavier than the oil. Safety is a priority with every science experiment. Disclaimer: This article may contain commission or affiliate links. Your name and email will never be sold or given to anyone else. Fill the dropper with the coloured water from either cup. When we shake the water and oil mixture you are attempting to emulsify the mixture through a physical process. Glass Jar with a lid (a pint canning jar works great), Glass Jar with a lid (a pint canning jar works great). This simple science experiment explores density using oil and water. Try adding an emulsifier and see what happens. Step 5 – Set the jar down and watch the liquid for a minute or two. For this easy science experiment, we observe exactly what does happens when we mix oil and water, then we’ll add another item to the mix to see how it changes! Read More…. Pour 1 cup of Oil into the jar. The first thing you will observe is that oil and water will not stay mixed together, no matter how hard you shake the jar. Securely tighten the lid on the jar and shake it for 15-20 seconds. ","position":1,"name":"Start by filling the jar with 1 cup...","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_1"},{"@type":"HowToStep","text":"Add a few drops of food coloring to the water and stir until combined. Learn more about how emulsifiers work in this Moon Dough activity. Take our FREE 5-day craft challenge with boredom busting activity ideas for kids! Observe what happens to the Oil and the Water now that the dish soap has been added to the mix. Success! That’s why I love this specific experiment for seeing how oil and water mix. 2. ","url":"https:\/\/coolscienceexperimentshq.com\/mixing-oil-water\/#mv_create_43_3"},{"@type":"HowToStep","text":"Securely tighten the lid on the jar and shake it for 15-20 seconds. With only a few common kitchen items, kids can explore density and the reaction of adding an emulsifier (dish soap) to the experiment. Print The second thing you will observe is that adding dish soap to the mixture changed the results of the experiment. Instructions Start by filling the jar with 1 cup of water. When you add soap to the mixture, the hydrophobic end of the soap molecule breaks up the nonpolar oil molecules, and the hydrophilic end of the soap molecule links up with the polar water molecules. Water molecules pack closer together so they sink to the bottom, leaving the oil sitting on top of the water. Why don’t oil and water mix? Add oil into a bowl. You only need washable markers and paper towel! This means they can’t form hydrogen bonds with water molecules. As a result, the oil will rise to the top of the water. Your name and email will never be shared. Kids will love learning about density and how oil and water do not mix in this fun and easy science experiment! Comment document.getElementById("comment").setAttribute( "id", "a06a3d70e42d9294d6ff84a39b738c78" );document.getElementById("h18cfd7200").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. The Science – Why don’t oil an water mix? In fact we use emulsifiers all the time when we are making bath bombs and even did an experiment showing the power of emulsifiers. Learn more about how emulsifiers work in this Moon Dough activity. We explored this in other experiments like Magic Milk. Materials By signing up you'll also receive our free weekly newsletter. Your email address will not be published. It is like little magnets attracting each other. Get started in STEM with easy, engaging activities. ","position":3,"name":"Pour 1 cup of Oil into the jar. What happens? 3. To get water and oil to mix we need an emulsifier and guess what? Set the jar down and watch the liquid for a minute or two. Does the oil mix with the water? Try these activities to dig deeper into the study of oil and water mixing. You can point out at this stage that you can already tell the oil and water will not mix. Instructions You can see that not only do oil and water not mix, but that even when floating in oil, the waters will mix together, creating our new colours. Joining gives you access to a library of free materials, in addition to regular emails featuring articles and products. Step 4 – Securely tighten the lid on the jar and shake it for 15-20 seconds. Leave the third cup with just plain water. Mix. This classic oil and water experiment is sometimes referred to as “fireworks in a jar” because it looks like fireworks falling down from the oil. Oil is less dense than water and floats on top of the water. Density is the amount of mass per unit of volume. She is passionate about exploring educational approaches that promote positive children's mental health practices and encourage a love of learning in all students. It breaks down the water bubbles into smaller bits, but it still does not mix and dissolve. Leave the third cup with just plain water. Have you ever heard the saying, “Oil and water don’t mix”? This results in water and oil not mixing and instead bunching together. The oil is LESS dense than the water. Welcome to STEAM Powered Family! Fill the larger cup/bowl/petro dish about 1 inch deep with baby oil. Turn off any adblockers to ensure our video feed can be seen. Or mix 3 primary colours to create a tertiary colour. Shelley has a BSc Psychology specialization, with post grad research and studies in memory, cognition, learning and childhood mental health.