Question

the processes that allows matter to change
finish the drawings below, how would the atoms behave either before or after each
melting
condensation
evaporation
match the picture to the correct process and indicate if the energy (temperature) is increasing or
decreasing:
freezing
energy is
sublimation
energy is
melting
energy is
name:

Explanation:

Step1: Understand phase - change concepts

Melting is the process of changing from solid to liquid. In a solid, atoms are closely packed in an orderly arrangement. In a liquid, atoms are more loosely packed and can move past each other.

Step2: Analyze the melting drawing

The first box on the left shows atoms in a closely - packed solid arrangement. After melting, in the box on the right, the atoms should be more spread out and able to move more freely, but still relatively close together compared to a gas.

Step3: Understand condensation

Condensation is the change from gas to liquid. In a gas, atoms or molecules are far apart and moving freely. In a liquid, they are closer together. The box on the right shows a liquid - like arrangement of atoms, so the box on the left should show a more spread - out gas - like arrangement of atoms.

Step4: Understand evaporation

Evaporation is the change from liquid to gas. The box on the right shows a gas - like arrangement of atoms (spread out), so the box on the left should show a more closely - packed liquid - like arrangement of atoms.

Step5: Analyze freezing

Freezing is the change from liquid to solid. Energy (temperature) decreases during freezing as heat is removed from the substance to make the atoms slow down and arrange themselves in a more orderly solid pattern.

Step6: Analyze sublimation

Sublimation is the change from solid directly to gas. Energy (temperature) increases during sublimation as energy is added to break the intermolecular forces holding the solid together and turn it into a gas.

Step7: Analyze melting (again for energy)

Melting is the change from solid to liquid. Energy (temperature) increases during melting as heat is added to break the intermolecular forces in the solid and turn it into a liquid.

Answer:

• For melting: Left box shows solid - closely packed atoms, right box shows liquid - more spread out atoms.
• For condensation: Left box shows gas - very spread out atoms, right box shows liquid - closer - packed atoms.
• For evaporation: Left box shows liquid - closer - packed atoms, right box shows gas - very spread out atoms.
• Freezing: Energy is decreasing.
• Sublimation: Energy is increasing.
• Melting: Energy is increasing.