Here's a breakdown:

* Formality in chemistry refers to the concentration of a substance in a solution, expressed as moles of solute per liter of solution. While temperature can influence the solubility of a substance, it doesn't directly change its formality. However, if the temperature changes the volume of the solution (e.g., due to expansion or contraction), the formality might also change indirectly.

* Physical state refers to whether a substance is a solid, liquid, or gas. This is directly influenced by temperature.

Here's why temperature affects physical state:

* Temperature and Molecular Motion: Temperature is a measure of the average kinetic energy of molecules. As temperature increases, molecules move faster and with more energy.

* States of Matter:

* Solid: In a solid, molecules are closely packed and vibrate in fixed positions.

* Liquid: In a liquid, molecules are more loosely packed and can move around each other.

* Gas: In a gas, molecules are far apart and move freely.

Examples:

* Water: At room temperature, water is a liquid. As the temperature drops below 0°C (32°F), it freezes into a solid (ice). As the temperature rises above 100°C (212°F), it boils into a gas (steam).

* Iron: At room temperature, iron is a solid. As the temperature rises, it melts into a liquid. At even higher temperatures, it becomes a gas.

In summary:

* While temperature doesn't directly change a substance's formality, it can indirectly affect it by altering the solution's volume.

* Temperature is a key factor determining the physical state of a substance, as it influences the kinetic energy and movement of molecules.