Take a tall glass. Pour honey carefully into the glass, so that it fills about 1/6th
of the glass. Along the side of the glass pour equal amount of dishwashing
liquid. The next liquid to be poured is water with a few drops of food colouring.
The next liquid is vegetable oil. You will see separate layers of liquid. Each
liquid has a different colour, thickness (viscosity) and density. Which liquid is
the most dense and which is the least dense? Mix them with a spoon and allow
it to stand. What do you see?
Answers
Answer:
Step 1 – Start by filling the jar with 1 cup of water.
Step 2 – Add a few drops of food coloring to the water and stir until combined. Make some observations about the water. What happened when the food coloring was added? Was it easy to mix the food coloring into the water? Does the food coloring stay mixed with the water? What do you think will happen when we pour the oil into the jar? Write down your hypothesis (prediction) and then follow the steps below.
Step 3 – Next pour 1 cup of oil into the jar. Make a few observations. Does the oil behave the same was as the food coloring did when you added it to the water?
Step 4 – Securely tighten the lid on the jar and shake it for 15-20 seconds.
Step 5 – Set the jar down and watch the jar for a couple of minutes. Observe what happens to the oil and the water and write down your findings. Did the oil and water stay mixed together? Was your hypothesis correct? Do you think there is anything else that can be added to the jar to prevent the oil and water from separating?
Step 6 – Next, take the lid off the jar and squirt in 1-2 teaspoons of dish soap.
Step 7 – Tighten the lid back on the jar and shake again for another 15-20 seconds.
Step 8 – Set the jar down and watch the liquid for a minute or two. Observe what happens to the oil and the water now that the dish soap has been added to the mix. Write down your findings. Did the oil and water stay mixed together this time? Do you know why adding the dish soap preventing the oil and water from separating? Find out the answer in the how does this experia experiment.
Mixing Oil & Water Science Experiment
Explanation:
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