Question

you must submit these notes to get the 2nd part of the activity to earn recovery credit. define and illustrate (draw pictures) these terms: · solid (particle model) · liquid (particle model) · gas (particle model) · melting point · freezing point · condensation point · boiling point

Explanation:

• Solid (particle model): Particles are closely packed in a fixed, regular pattern with strong intermolecular forces, vibrating in place. For illustration, draw small circles tightly arranged in a grid - like pattern.
• Liquid (particle model): Particles are close together but can move past one another. Intermolecular forces are weaker than in solids. Draw circles that are close but not in a strict pattern, with some space for movement.
• Gas (particle model): Particles are far apart, moving freely and randomly with very weak intermolecular forces. Draw circles widely spaced out with arrows showing random motion.
• Melting Point: The temperature at which a solid changes to a liquid. For illustration, you can draw a thermometer next to a picture of a solid turning into a liquid.
• Freezing Point: The temperature at which a liquid changes to a solid. Draw a thermometer next to a picture of a liquid turning into a solid.
• Condensation Point: The temperature at which a gas changes to a liquid. Draw a thermometer next to a picture of gas molecules coming together to form a liquid.
• Boiling Point: The temperature at which a liquid changes to a gas. Draw a thermometer next to a picture of a liquid with bubbles rising (boiling).

Answer:

• Solid (particle model): Defined as particles closely packed in a fixed pattern with strong intermolecular forces, vibrating in place. Illustration: Small circles tightly arranged in a grid - like pattern.
• Liquid (particle model): Defined as particles close together but able to move past one another with weaker intermolecular forces than solids. Illustration: Circles close but not in a strict pattern, with space for movement.
• Gas (particle model): Defined as particles far apart, moving freely and randomly with very weak intermolecular forces. Illustration: Widely spaced - out circles with arrows showing random motion.
• Melting Point: Defined as the temperature at which a solid changes to a liquid. Illustration: Thermometer next to a picture of a solid turning into a liquid.
• Freezing Point: Defined as the temperature at which a liquid changes to a solid. Illustration: Thermometer next to a picture of a liquid turning into a solid.
• Condensation Point: Defined as the temperature at which a gas changes to a liquid. Illustration: Thermometer next to a picture of gas molecules coming together to form a liquid.
• Boiling Point: Defined as the temperature at which a liquid changes to a gas. Illustration: Thermometer next to a picture of a liquid with bubbles rising (boiling).