Question

1. what do you need to change if you want to change the state of matter of something?
2. list the phases of matter in order from the least amount of energy to the most.
3. what is common between evaporation and boiling?
4. what is the difference between evaporation and boiling?
5. what does \melting point\ mean?
6. what is the melting point of water?
7. what phase is it if substance is in between its melting point and boiling point?
8. what phase is it if something is below its freezing point?

Explanation:

1. Changing the state of matter requires a change in temperature or pressure. Temperature affects the kinetic energy of particles and pressure can compress or expand substances.
2. The phases of matter from least to most energy are solid (particles have least kinetic energy and are closely - packed), liquid (particles have more kinetic energy and can move more freely), and gas (particles have the most kinetic energy and are widely spaced).
3. Both evaporation and boiling are processes of phase change from liquid to gas. They involve the conversion of a liquid substance into vapor.
4. Evaporation occurs at the surface of a liquid at any temperature, while boiling occurs throughout the liquid at a specific boiling - point temperature.
5. The melting point is the temperature at which a solid substance changes into a liquid state under a given pressure.
6. The melting point of water is 0 degrees Celsius (or 32 degrees Fahrenheit) under standard atmospheric pressure.
7. If a substance is between its melting point and boiling point, it is in the liquid phase.
8. If something is below its freezing point, it is in the solid phase.

Answer:

1. Temperature or pressure.
2. Solid, liquid, gas.
3. Both are liquid - to - gas phase changes.
4. Evaporation occurs at surface at any temperature; boiling occurs throughout liquid at boiling point.
5. The temperature at which a solid changes to a liquid.
6. 0 degrees Celsius (or 32 degrees Fahrenheit).
7. Liquid.
8. Solid.