This project will require the following materials: cooking oil, dropper, water, clear plastic glasses and food coloring. Fill a glass with one part water and one part oil. Stir the mixture. Add two drops of food coloring to the glass. Students should then compile their notes into a paragraph with an explanation as to why the mixture reacted the way it did. The oil and water will not mix, causing the food coloring to latch onto the oil until it has passed through. The food coloring will then begin to mix with the water as gravity pulls it down.
To complete this project you will need the following items: small soft drink bottle, water, food coloring, and 2 tablespoons of cooking oil, dish washing liquid or detergent. Add two drops food coloring to the water. Place 2 tablespoons of colored water and 2 tablespoons of oil into the soft drink bottle. Replace lid and shake vigorously. Note that the water and oil did not mix. Add a dash of dish soap to the bottle and shake. The soap is attracted to both fluids and bonds them together through emulsion.
You will need the following materials to complete this project: cooking oil, blue food coloring, drinking glass, water, small objects of different sizes and materials. Pour water and food coloring to the glass. Slowly add oil to the glass. Begin adding small objects to the mixture, one at a time. Have students record their observations of what happens during this process. Objects with higher density will sink faster than objects, which are less dense. The oil will float above the water; however, objects such as marbles will sink to the bottom.
You will need water, oil, drinking glass and salt to complete this project. Add two parts water and one part oil to the glass. The oil will float on top of the water because it is less dense. Pour salt into the glass and notice that the salt pulls the oil down into the water, causing it to look like the mixture is bubbling. Once the salt dissolves, the oil will begin to rise back to the top of the glass. Have students record their observations and compile them into a paragraph, explaining how density affected the mixture.