According to Elmhurst College, gas exerts pressure due to the force gas exerts on a container's walls. An example is a person blowing up a balloon. The walls of the balloon expand due to the pressure of the air molecules inside the balloon being greater than that on the outside.
Pressure as a property determines the directional flow of mass. Using the balloon as an example again, the pressure of the air causes the balloon to leave a region of high pressure and enter a region of low pressure. Robert Boyle developed the first systematic study concerning the relationship between pressure and volume in gases.Learn More
The boiling point of regular household vinegar is around 213 degrees Fahrenheit. Vinegar that possesses a higher concentration of acetic acid will require a higher temperature to boil.Full Answer >
The stronger the intermolecular forces, the more energy it takes to overcome these interactions and to cause the substance to boil. Therefore, molecules with strong bonds have high boiling points, and molecules with weak bonds have lower boiling points.Full Answer >
The normal phase of iron is as a lustrous, gray, solid metal. Its melting point is 2800 degrees Fahrenheit, and its density is 7874 kg m-3. Like many metals, it is able to be hammered into thin sheets and pulled into wire.Full Answer >
The most unusual thing about the way water changes from one state to another is that its liquid state is denser than its solid state, so increased pressure actually encourages ice to melt. This is unlike most substances, in which increased pressure encourages solidification because the solid state is the most dense. Water also requires a great deal of energy to change its physical state, more than most substances require.Full Answer >