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May 24, 2018 · In this activity we’ll explore what makes oil so special, and we’ll try making the impossible happen: mixing oil and water! Background. Unlike many other substances such as fruit juice, food...
- Like Dissolves Like
- Making Oil and Water Mix
- Density and Immiscibility
The saying in chemistry is that "like dissolves like." What this means is the polar liquids (like water) dissolve in other polar liquids, while nonpolar liquids (usually organic molecules) mix well with each other. Each H2O or water molecule is polar because it has a bent shape in which the negatively charged oxygen atom and the positively charged ...
Chemistry has tricks for getting oil and water to interact. For example, detergent works by acting as emulsifiers and surfactants. The surfactants improve how well water can interact with a surface, while the emulsifiers help oil and water droplets mix together.
Oil floats on water because it is less dense or has lower specific gravity. The immiscibility of oil and water, however, is not related to the difference in density.
Jan 9, 2018 · Pop Up Science: Oil and Water. Discover the relationship between oil and water in this animation/live action video demonstration. A split screen shows the reaction take place in a glass of...
- 1 min
- 160.3K
- McGraw Hill PreK-12
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Nov 8, 2017 · MIT researchers discovered a new way to get oil and water to mix, and stay mixed, by harnessing the condensation of water onto an oil-surfactant mixture. The process creates a nanoscale emulsion that remains stable for months.
Oil and water don’t mix because oil is made up of non-polar molecules while water molecules are polar. Estrella Mountain Community College explains how water molecules are attracted to other water molecules and thus exclude the oil molecules which are not electrically charged.
This explains why oil doesn’t mix well with water. Their molecules aren’t able to bond. So what happens when you try to mix oil and water? The water molecules attract each other, and the oil molecules stick together. That causes oil and water to form two separate layers.
In the case of oil and water, one is polar (water), and the other is non-polar (oil). Water is polar because of the bonds between oxygen and hydrogen are polar. The electronegativity difference between these two elements is about 1.24, meaning it is very polar.
