They develop a prediction for why detergents clean greasy dishes. Students use mathematics skills to graph the average time required for the oil layer to reappear versus the number of drops of dishwashing liquid in the test tube. Properties and Changes of Properties in Matter, Grades 5-8 A characteristic property of oil is insolubility in water. However, most of an oil particle will dissolve into a soap particle, due to similarities between them. If oil and soap are in water, the oil particles will become suspended throughout the water.
Substances have different characteristic properties.
The types of substances included in a mixture play an important role in determining the properties of the final mixture. Substances have different characteristic properties, including the ability to dissolve other substances. When combined together to make a mixture, the resulting mixture has different properties depending upon the amount of each substance included. The physical properties of compounds reflect the nature of the interactions among their molecules. Water molecules are polar, which enables the negative end of one molecule to attract the positive end of a neighboring molecule, ultimately causing water's strong cohesive force.