name: eliq perez date: february 3,2028 day 1 complete the terms and answers to the questions below 1. what phase change goes from solid to liquid? 2. what phase change goes from liquid to gas? 3. what phase change goes from gas to liquid? 4. what phase change goes from liquid to solid? 5. as an object goes from solid to gas, is it taking in heat or losing heat? 6. as an object goes from gas to solid, is it taking in heat or losing heat? 7. how are the molecules moving during the solid phase? 8. how are the molecules moving during the liquid phase? 9. how are the molecules moving during the gas phase? 10. if you increase the speed of the molecules, are you increasing or decreasing in temperature?

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Accepted Answer

### Question 1
# Brief Explanations:
Phase change from solid to liquid is called melting. This is a fundamental concept in physics (a subfield of Natural Science) where a solid absorbs heat to transition into a liquid state, like ice turning into water.
# Answer:
Melting

### Question 2
# Brief Explanations:
The phase change from liquid to gas is vaporization (which includes boiling and evaporation). In this process, liquid molecules gain enough energy to escape into the gaseous state, e.g., water turning into steam.
# Answer:
Vaporization (or Boiling/Evaporation)

### Question 3
# Brief Explanations:
When a gas changes to a liquid, it's called condensation. Gas molecules lose energy (cool down) and come together to form a liquid, like water vapor forming dew on a cold surface.
# Answer:
Condensation

### Question 4
# Brief Explanations:
The phase change from liquid to solid is freezing (or solidification). Liquid molecules lose energy and arrange themselves into a solid structure, such as water turning into ice.
# Answer:
Freezing (or Solidification)

### Question 5
# Brief Explanations:
Going from solid to gas (sublimation, or a combination of melting and vaporization) requires energy. The object must absorb heat to break the intermolecular forces in the solid and then further to become a gas, so it's taking in heat.
# Answer:
Taking in heat

### Question 6
# Brief Explanations:
Changing from gas to solid (deposition) involves the gas molecules losing energy. They release heat as they transition directly to a solid (or via condensation and then freezing), so the object is losing heat.
# Answer:
Losing heat

### Question 7
# Brief Explanations:
In the solid phase, molecules are closely packed and vibrate in fixed positions. The intermolecular forces are strong, restricting movement to small vibrations around their equilibrium points.
# Answer:
Molecules vibrate in fixed positions

### Question 8
# Brief Explanations:
In the liquid phase, molecules have more freedom than in solids. They can slide past one another and move around within the liquid, though they are still relatively close together due to intermolecular forces.
# Answer:
Molecules slide past each other (or move freely within the liquid)

### Question 9
# Brief Explanations:
In the gas phase, molecules have high kinetic energy. They move rapidly and randomly, colliding with each other and the container walls, and are far apart compared to solids and liquids.
# Answer:
Molecules move rapidly and randomly (or freely in all directions)

### Question 10
# Brief Explanations:
Temperature is related to the average kinetic energy of molecules. If molecule speed increases, their kinetic energy increases, which means the temperature (a measure of average kinetic energy) is increasing.
# Answer:
Increasing

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