Question

using fig. 2, select the graph that best represents the relationship between particle energy and substance temperature as the cylinder is heated.

Explanation:

Step1: Understand the relationship between particle energy and temperature

When a substance is heated, the energy of its particles (kinetic energy) increases. As the cylinder is heated, the temperature of the substance rises, and so does the particle energy.

Step2: Analyze each graph

• Graph A: Shows a decrease in temperature with increasing particle energy. This is incorrect as heating should increase both.
• Graph B: Shows an increase in temperature as particle energy increases. This is correct as per the heating - particle energy relationship.
• Graph C: Shows no relationship (horizontal line for temperature change with particle energy change). This is incorrect as there is a direct relationship when heating.

Answer:

B.