A sample of carbon dioxide that undergoes a transformation from solid to liquid and then to gas would undergoa)a change in massb)a change in densityc)a change in compositiond)no change in physical propertiesCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Change in Density:
When a sample of carbon dioxide undergoes a transformation from solid to liquid and then to gas, it experiences a change in density. Density is defined as the mass per unit volume of a substance. As the carbon dioxide transitions from solid to liquid and then to gas, its physical state changes, resulting in variations in density.

Solid to Liquid:
When carbon dioxide transitions from a solid to a liquid state, the particles gain more kinetic energy, causing them to move further apart. This leads to a decrease in density as the particles become less closely packed together in the liquid form compared to the solid form.

Liquid to Gas:
As the carbon dioxide further transitions from a liquid to a gas state, the particles gain even more kinetic energy and move even further apart. This results in a significant decrease in density as the gas particles are much more spread out compared to the liquid state.

Overall:
Therefore, the transformation of carbon dioxide from solid to liquid and then to gas results in a change in density due to the variations in particle arrangement and spacing in each state. This change in density is a key characteristic of the physical transformation of carbon dioxide between its solid, liquid, and gas states.

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