Phase Change

Matter is primarily found in three states: solid, liquid , or (a)   . However, it can change state, which is called a (b)   . The same matter in different states has different amounts of (c)   .

For some reason I never plasma as this answer but plasma is the most abundant matter.

• gas
• phase change
• energy

Phase changes can result from gaining or losing energy:

One is freezing. What are the others?

• Condensation:

• Melting:

• Vaporization (boiling):

• Sublimation:

• Deposition:

Phase Changes and Temperature

An important note about phase changes is that the ​ (a)   during a phase change remains ​ (b)   until the phase change is complete.

• constant
• temperature

So as something is changing from one thing to another such as ice cube to liquid the temp is constant until the phase is finished.

When a solid is heated, the temperature of the solid rises until it reaches its melting point. Any additional energy contributes to the melting

• When water reaches its boiling point, the energy added to it goes towards breaking the bonds between water molecules, allowing them to escape as gas (water vapor), rather than increasing the temperature further.

• So to me what they mean is that the temp is rising until it gets to that point of where it starts turning into something else.

• Can water get hotter than 212 degrees? Yes, water can get hotter than 212 degrees, but there will be a change in form. As water boils at this temperature, it changes from a liquid to a gas. That gas, or water vapor can continue to rise in temperature

• As long as water is actively boiling, its temperature remains stable at the boiling point

When a solid is heated, the temperature of the solid rises until it reaches its (a)   . Any additional energy contributes to the (b)   . Once all of the solid is melted, the temperature begins to rise again. Once the liquid reaches its (c)   , the temperature remains steady until all of the matter (d)   and reaches the (e)   .

• melting point
• melting
• boiling point
• evaporates
• gas state

Boiling water is boiling once it gets to 212 Fahrenheit and then it never gets hotter. It will just then turn into

• steam

• steam engine
• ice

The reverse is also true. When a gas cools, it reaches its (a)   . It remains at a constant temperature during condensation until it is all liquid. If it continues to cool, it will reach the (b)   and remain the same temperature during freezing until it is completely solid.

• condensation point
• freezing point

Imagine a block of ice at 20°F in a pan over a flame. As you heat the ice, its temperature rises. However, once the temperature reaches 32°F, adding more heat does not raise the temperature of the ice. Instead, the energy produces a phase change from ice to water. The ice cube continues to absorb heat, but the average kinetic energy of the atoms within the ice cube and the liquid water stays at 32°F. Once all of the ice cube melts, the liquid will begin to rise in temperature.

• True

• F

The ​ (a)   at which phase changes occur are ​ (b)   properties of a substance. For example, the melting point of ice is 0°C (32°F). However, the melting point of graphite carbon is 3550 °C.

• specific temperatures
• physical

When ​ (a)   is added to or removed from a substance going through a phase change, that is what performs the phase change. Therefore, the temperature of the substance remains ​ (b)   until the phase change is ​ (c)   .

• energy
• constant
• complete