0
Changes in temperature and pressure can cause a change in the state of matter.
For an example lets consider the process of water boiling to steam. The boiling curve on a phase diagram is the line between the gas and the liquid plotted as function of temperature and pressure, thus to deal with this problem we will fix one quantity, the pressure. Lets assume the pressure is atmospheric, this will mean the water boils at the familiar 100 degrees Celsius. At room temperature (25 Degrees) the liquid doesn't boil but there is an equilibrium between the liquid and its vapour as any molecule with enough kinetic energy will escape (the temperature is just a measure of the average kinetic energy of all the molecules), but in essence the system is in equilibrium and the rate of vapour dissolution is the same as the evaporation.
Raising the temperature to 100 degrees Celsius and sustaining it there for the duration of the boiling will provide enough energy to allow all the molecules to escape (although obviously not all at once, they still have individual energies that may or may not be sufficient to allow them to escape). The heat capacity at the boiling temperature becomes infinite meaning all energy supplied breaks the binding of molecules from the water rater than raising the temperature, this is a key condition of a change of state.
Okay so to clarify a change of state occurs when the associated curve is met on the phase diagram by any pressure temperature combinations that rests on the curve. Sustain the temperature here will suffice to transform all the matter in one phase into another, like i.e. boiling away a pan of water, you must keep the gas on to boil the whole thing.
The key is to always bear in mind that temperature is just a macroscopic average of lots of individual microscopic components (atoms / molecules), each with an accociated energy.
What else can I help you with?
What affects a compounds tendency to change states?
A compound's tendency to change states is primarily affected by temperature and pressure. As temperature increases, most compounds transition from solid to liquid to gas states. Increasing pressure can also cause a compound to change states, such as forcing a gas to condense into a liquid. Additionally, the intermolecular forces within the compound can influence its tendency to change states.
What causes a change in state?
A change in state can be caused by either adding or removing energy from a substance. For example, adding heat can cause a solid to melt into a liquid, and removing heat can cause a liquid to freeze into a solid. Pressure changes can also cause a substance to change state, such as turning a gas into a liquid by increasing pressure.
Did the chemical change or a physical change cause the change in the crush can appearance?
The change in the crushed can appearance was caused by a physical change. When the can is crushed, the arrangement of its particles is altered, but no new substances are formed.
Do mood rings change colors by the body temperature?
Yes, mood rings change color based on the body temperature of the wearer. The crystals inside the ring react to the temperature changes and cause the color to shift, typically ranging from different shades of blue to green to indicate different emotional states.
What could cause a physical change in a solid piece of sodium metal?
Exposure to air or moisture can cause sodium metal to oxidize and form sodium hydroxide, a different chemical compound. This chemical reaction would result in a physical change in the appearance and properties of the sodium metal.
What will cause the states of matter to change?
Temperature and pressure are the most common.
What affects a compounds tendency to change states?
A compound's tendency to change states is primarily affected by temperature and pressure. As temperature increases, most compounds transition from solid to liquid to gas states. Increasing pressure can also cause a compound to change states, such as forcing a gas to condense into a liquid. Additionally, the intermolecular forces within the compound can influence its tendency to change states.
How did Franklin Roosevelt and Lyndon Johnson help cause change in the US?
They served as Presidents of the United States.
Did sectionalism cause states to join the union?
No it cause states to secide
How can overpopulation cause an ecosytem to change?
how can overpopulation cause an ecosystem to change
The ability to cause change?
energy is the ability to cause change or do work
What can cause ecosystems to change?
What can cause ecosystems to change including natural disasters
What is a change to the united states constitution is?
A change to the untied states constitution is an amendment.
What is the major cause of changes in the states of matter coolong of matter to its evaporation change of speed of aoms or molecules or expansion of particles into avalible space?
d
What change of state is sweating involved in?
it involves a lot of states i think it involves liguid to gas cause you sweat is liquid tehn the odur is gas
What is one cause of culture change?
one cause of cultural change is that education.
What are she six factors that cause a change in supply and explain them?
what are the six that cause a change in supply
