Question

Graph a heating curve for water. Label (with the most specific names & numbers) the following parts of the graph, adding units where appropriate:

1) x axis
2) y axis
3) title
4) all 3 phases of matter
5) show where KE is increasing
6) show where PE is increasing
7) identify the phases changes

Answer 1

Step-by-step explanation:

1. x-axis: Temperature (in degrees Celsius)

2. y-axis: Heat (in Joules)

3. Title: Heating Curve for Water

4. All 3 phases of matter: solid (ice), liquid (water), gas (steam)

5. Show where KE is increasing: The line segment from A to B represents the increase in kinetic energy as the water is heated from solid to liquid state, and the line segment from C to D represents the increase in kinetic energy as the water is heated from liquid to gas state.

6. Show where PE is increasing: The line segment from A to B represents the increase in potential energy as the ice is melting into water, and the line segment from C to D represents the increase in potential energy as the liquid water is vaporizing into steam.

7. Identify the phase changes: The segment from A to B represents the melting of ice (solid to liquid), and the segment from C to D represents the vaporization of water (liquid to gas). The flat portions between B and C represent the heating of water in liquid state and the absorption of heat without any change in temperature (latent heat of fusion and latent heat of vaporization).