Question

13-14. solid substance a has a melting point of 100°c . liquid substance b has a freezing point of 110°c. for each substance, identify its state of matter and describe the motion of the particles at 115°c

substance a at 115°c	substance b at 115°c

| state:
description: | state:
description: |

Explanation:

Substance A at 115°C

• State: Liquid
• Description: The melting point of solid substance A is \( 100^\circ \text{C} \). At \( 115^\circ \text{C} \) (which is above the melting point), substance A has melted into a liquid. In a liquid state, the particles are close together but can move past one another freely. They have more kinetic energy than in the solid state, allowing them to slide and flow, taking the shape of their container while maintaining a relatively constant volume.

Substance B at 115°C

• State: Liquid
• Description: The freezing point of liquid substance B is \( 110^\circ \text{C} \). At \( 115^\circ \text{C} \) (which is above the freezing point), substance B remains in the liquid state. In this liquid state, the particles are also close together but can move past each other. They have enough kinetic energy to overcome some of the intermolecular forces, enabling them to move freely within the bulk of the liquid, similar to the motion described for substance A in the liquid state, with the ability to flow and take the shape of the container.

Substance A at \( 115^\circ \text{C} \)	Substance B at \( 115^\circ \text{C} \)

Answer:

Substance A at 115°C

• State: Liquid
• Description: The melting point of solid substance A is \( 100^\circ \text{C} \). At \( 115^\circ \text{C} \) (which is above the melting point), substance A has melted into a liquid. In a liquid state, the particles are close together but can move past one another freely. They have more kinetic energy than in the solid state, allowing them to slide and flow, taking the shape of their container while maintaining a relatively constant volume.

Substance B at 115°C

• State: Liquid
• Description: The freezing point of liquid substance B is \( 110^\circ \text{C} \). At \( 115^\circ \text{C} \) (which is above the freezing point), substance B remains in the liquid state. In this liquid state, the particles are also close together but can move past each other. They have enough kinetic energy to overcome some of the intermolecular forces, enabling them to move freely within the bulk of the liquid, similar to the motion described for substance A in the liquid state, with the ability to flow and take the shape of the container.

Substance A at \( 115^\circ \text{C} \)	Substance B at \( 115^\circ \text{C} \)