Which of the following is an accurate listing of phase changes which are exothermic and phase changes which are endothermic and why? Exothermic-melting, evaporation Endothermic-freezing, condensation A B C D Explanation: Melting and evaporation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Freezing and condensation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic-melting, condensation Endothermic-freezing, evaporation Explanation: Melting and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Freezing and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic-melting, freezing Endothermic-evaporation, condensation Explanation: Melting and freezing release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Condensation and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic - freezing, condensation Endothermic-melting, evaporation Explanation: Freezing and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Melting and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules.
Which of the following is an accurate listing of phase changes which are exothermic and phase changes which are endothermic and why? Exothermic-melting, evaporation Endothermic-freezing, condensation A B C D Explanation: Melting and evaporation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Freezing and condensation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic-melting, condensation Endothermic-freezing, evaporation Explanation: Melting and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Freezing and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic-melting, freezing Endothermic-evaporation, condensation Explanation: Melting and freezing release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Condensation and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules. Exothermic - freezing, condensation Endothermic-melting, evaporation Explanation: Freezing and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer. Melting and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules.
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Question
Transcribed Image Text:### Graph Explanation
The graph displayed is a plot of Temperature (°C) on the vertical axis against Heat Added (kiloJoules) on the horizontal axis. It consists of five labeled sections (A, B, C, D, E), depicting the phase changes of a substance as heat is added.
1. **A to B:** Temperature increases as heat is added.
2. **B to C:** A plateau where temperature remains constant, indicating a phase change.
3. **C to D:** Temperature rises again indicating another phase.
4. **D to E:** Another plateau where temperature remains constant, showing another phase change.
### Text Explanation
**Question:**
Which of the following is an accurate listing of phase changes which are exothermic and phase changes which are endothermic, and why?
**Options:**
**A**
- *Exothermic*: Melting, evaporation
- *Endothermic*: Freezing, condensation
- *Explanation*:
- Melting and evaporation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer.
- Freezing and condensation absorb heat, causing molecules to move faster and break attractive forces between molecules.
**B**
- *Exothermic*: Melting, condensation
- *Endothermic*: Freezing, evaporation
- *Explanation*:
- Melting and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer.
- Freezing and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules.
**C**
- *Exothermic*: Melting, freezing
- *Endothermic*: Evaporation, condensation
- *Explanation*:
- Melting and freezing release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer.
- Condensation and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules.
**D**
- *Exothermic*: Freezing, condensation
- *Endothermic*: Melting, evaporation
- *Explanation*:
- Freezing and condensation release heat, causing molecules to move slower, allowing attractive forces to pull molecules closer.
- Melting and evaporation absorb heat, causing molecules to move faster and break attractive forces between molecules.
Expert Solution
Step 1
Endothermic Process: The process in which heat is absorbed from the surroundings is called an Endothermic process. Since heat is taken from the surroundings, the temperature of the surroundings decreases.
Exothermic Process: The process in which heat is given off to the surroundings is called an Exothermic process. Since heat is given off to the surroundings, the temperature of the surroundings increases.
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