Question

a temperature vs. time graph with y - axis labeled temperature (°c) and x - axis labeled time (min). there are multiple blue rectangles on the graph for labeling. a draggables box on the right lists options: solid, liquid, gas, melting, freezing, boiling, condensation, deposition, sublimation.

Explanation:

To solve this problem, we analyze the temperature - time graph (a cooling curve, as temperature decreases over time) and match each segment to the correct state or phase change:

Step 1: Initial Segment (Highest Temperature)

At the start, the substance has the highest temperature. In the context of a cooling curve, a high - temperature substance in the gaseous state will lose heat. So the first (top - most) box, which represents the initial state with the highest temperature, should be filled with "Gas".

Step 2: First Horizontal Segment (Phase Change)

When a gas loses heat, it undergoes condensation (gas to liquid phase change) at a constant temperature. So the second box (the first horizontal segment) corresponds to "Condensation". After condensation, the substance is in the liquid state. Wait, no, actually, during the phase change of condensation, the temperature remains constant. After the condensation phase change is complete, the substance is a liquid and starts to cool down. Wait, maybe I mixed up. Let's re - think. A cooling curve: starts with gas, then condensation (gas to liquid, temperature constant), then liquid cooling, then freezing (liquid to solid, temperature constant), then solid cooling.

Wait, the first sloped segment: gas cooling (temperature decreasing) until it reaches the condensation temperature. Then the horizontal segment is condensation (gas to liquid, temperature constant). Then the next sloped segment: liquid cooling (temperature decreasing) until it reaches the freezing temperature. Then the next horizontal segment: freezing (liquid to solid, temperature constant). Then the next sloped segment: solid cooling (temperature decreasing).

So:

• The first (top) sloped segment: substance is gas, cooling. So the box here: "Gas" (but wait, the draggables include states and phase changes. Wait, the first box is a sloped line (temperature changing) - so it's a state? Wait, no, the boxes are either sloped (temperature changing, so substance in a single state, cooling) or horizontal (phase change, temperature constant).

Let's list the draggables: States (Solid, Liquid, Gas) and Phase Changes (Melting, Freezing, Boiling, Condensation, Deposition, Sublimation).

1. Top - most sloped line (temperature decreasing, high temperature): Substance is in gas state, cooling. So box 1: "Gas"
2. First horizontal line (temperature constant, phase change): Gas to liquid is condensation. So box 2: "Condensation"
3. Next sloped line (temperature decreasing, substance is liquid, cooling): Box 3: "Liquid"
4. Next horizontal line (temperature constant, phase change): Liquid to solid is freezing. So box 4: "Freezing"
5. Bottom - most sloped line (temperature decreasing, substance is solid, cooling): Box 5: "Solid"

Final Answer (for each box from top to bottom):

1. Gas
2. Condensation
3. Liquid
4. Freezing
5. Solid

Answer:

To solve this problem, we analyze the temperature - time graph (a cooling curve, as temperature decreases over time) and match each segment to the correct state or phase change:

Step 1: Initial Segment (Highest Temperature)

At the start, the substance has the highest temperature. In the context of a cooling curve, a high - temperature substance in the gaseous state will lose heat. So the first (top - most) box, which represents the initial state with the highest temperature, should be filled with "Gas".

Step 2: First Horizontal Segment (Phase Change)

When a gas loses heat, it undergoes condensation (gas to liquid phase change) at a constant temperature. So the second box (the first horizontal segment) corresponds to "Condensation". After condensation, the substance is in the liquid state. Wait, no, actually, during the phase change of condensation, the temperature remains constant. After the condensation phase change is complete, the substance is a liquid and starts to cool down. Wait, maybe I mixed up. Let's re - think. A cooling curve: starts with gas, then condensation (gas to liquid, temperature constant), then liquid cooling, then freezing (liquid to solid, temperature constant), then solid cooling.

Wait, the first sloped segment: gas cooling (temperature decreasing) until it reaches the condensation temperature. Then the horizontal segment is condensation (gas to liquid, temperature constant). Then the next sloped segment: liquid cooling (temperature decreasing) until it reaches the freezing temperature. Then the next horizontal segment: freezing (liquid to solid, temperature constant). Then the next sloped segment: solid cooling (temperature decreasing).

So:

• The first (top) sloped segment: substance is gas, cooling. So the box here: "Gas" (but wait, the draggables include states and phase changes. Wait, the first box is a sloped line (temperature changing) - so it's a state? Wait, no, the boxes are either sloped (temperature changing, so substance in a single state, cooling) or horizontal (phase change, temperature constant).

Let's list the draggables: States (Solid, Liquid, Gas) and Phase Changes (Melting, Freezing, Boiling, Condensation, Deposition, Sublimation).

1. Top - most sloped line (temperature decreasing, high temperature): Substance is in gas state, cooling. So box 1: "Gas"
2. First horizontal line (temperature constant, phase change): Gas to liquid is condensation. So box 2: "Condensation"
3. Next sloped line (temperature decreasing, substance is liquid, cooling): Box 3: "Liquid"
4. Next horizontal line (temperature constant, phase change): Liquid to solid is freezing. So box 4: "Freezing"
5. Bottom - most sloped line (temperature decreasing, substance is solid, cooling): Box 5: "Solid"

Final Answer (for each box from top to bottom):

1. Gas
2. Condensation
3. Liquid
4. Freezing
5. Solid