3. For each of the scenarios is heat added or heat removed from the system? a. Melting (solid to liquid): __ b. Freezing (liquid to solid) : __ c. Condensation (gas to liquid) : __ d. BoilingNaporizatio n (liquid to gas) __ 4. Circle or highlight the word that will make the statement true: a. If heat is added particles move (faster/slower) and kinetic energy (increases/decreases). If heat is removed, particles move (faster/slower)and kinetic energy (increases/decrea.ses)

## Step 1<br />The first part of the question asks whether heat is added or removed in different scenarios. <br /><br />## Step 2<br />a. Melting (solid to liquid): During the process of melting, heat is added to the system. This is because the particles in the solid need to gain enough energy to overcome the forces holding them together in the solid state and move freely in the liquid state.<br /><br />## Step 3<br />b. Freezing (liquid to solid): During the process of freezing, heat is removed from the system. This is because the particles in the liquid need to lose energy to form the rigid structure of the solid state.<br /><br />## Step 4<br />c. Condensation (gas to liquid): During the process of condensation, heat is removed from the system. This is because the particles in the gas need to lose energy to form the liquid state.<br /><br />## Step 5<br />d. Boiling/Vaporization (liquid to gas): During the process of boiling or vaporization, heat is added to the system. This is because the particles in the liquid need to gain enough energy to overcome the forces holding them together in the liquid state and move freely in the gas state.<br /><br />## Step 6<br />The second part of the question asks to circle or highlight the word that will make the statement true.<br /><br />## Step 7<br />a. If heat is added, particles move faster and kinetic energy increases. If heat is removed, particles move slower and kinetic energy decreases.