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In oxidation and hydrolysis, water promotes changes in the chemical and physical properties of mineral oils and some synthetics, which lead to acid formation, viscosity change, varnish and sludge. this would lead to physical change. Water boiling is a physical change as water molecules vibrate faster, they enter the gas phase and become water vapor H 2 O (g). The combination of biological, physical, and chemical processes is usually referred to as weathering. Chemical Change. The majority of introductory chemistry and organic chemistry textbooks state that oil and water don't mix because of enthalpic effects. Butter melting. An emulsion is a temporarily stable mixture of immiscible fluids, such as oil and water, achieved by finely dividing one phase into very small droplets. Physical Change. Rubbing alcohol evaporates quickly into the air. However, if there is reaction between the veg. Water contamination also has a negative impact on the base oil of the lubricant and causes problems such as oxidation, hydrolysis and aeration. Veg. ... Chemical Change. Physical Change. The same substance is present before and after the psysical change, just with different form or state of matter. Answer is: mixing water and powdered drink mix, combining oil and vinegar to make salad dressing, diluting bleach with water and dinner spreading peanut butter on bread. To speed the process, researchers use oil dispersants, specialized chemical agents, to change the physical and chemical composition of oil. Hot gas produced when oxygen and hydrogen mix to make water. There also can be more complex systems, such as oil in water in oil (o/w/o). When oil, water and dish soap are mixed together, the oil and water don’t separate like they did when they were the only two items in the jar. ... to help us mix oil and water. As a result, the oil will rise to the top of the water. 4. Even if you try to shake up a bottle of half-oil and half-water, the oil just breaks up into smaller droplets, but it doesn’t truly mix with the water. Copper reacts with carbon dioxide to form copper carbonate ... Chemical & Physical Change 12 Terms. It turns to a gas but maintains the properties of alcohol. Physical property can be observed and measured without any changes in molecular composition. if the food coloring is also hydrophobic, then the Veg.oil and food coloring would mix together. oil is hydrophobic. Chemical Change. Mixing oil and vinegar. Ice melting involves a change from a solid to a liquid and the substances maintain the properties of water. Sugar dissolving in water. Also, food coloring only mixes with water. Chemical changes are frequently harder to reverse than physical changes. 3. The second thing you will observe is that adding dish soap to the mixture changed the results of the experiment. The act of burning paper actually results in the formation of new chemicals (carbon dioxide and water) from the burning of the wax. Soured Milk. Common emulsions can be oil suspended in water or aqueous phase (o/w) or water suspended in oil (w/o). The charges at either end of the water molecule help break up the chemical structures of other molecules. These weathering reactions have different rates depending on the chemical structure of the oil, habitat conditions (such as water temperature or oxygen and nutrient supply), and mixing of the water by wind, waves, and currents. If you see coloring in the oil… The molecules of water can’t mix with the molecules of oil. oil and the coloring, then it may form other chemicals, and this will be chemical change. It does not color the oil at all. One good example of a chemical change is burning a candle. Make water charges at either end of the lubricant and causes problems such as oxidation, hydrolysis and.. 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