for such a small molecule, water has a very high specific heat. this means it takes a lot of energy to raise…

for such a small molecule, water has a very high specific heat. this means it takes a lot of energy to raise the temperature of water. another important property is the range of temperature for which water remains a liquid. when water evaporates, like from sweat, it also removes a lot of heat from our body. using the data below, create a graph to demonstrate the heating curve of water. the water starts out as ice and is heated until it is all water vapor. when you are finished with the graph, label the areas on the graph as: ice, water, steam, melting, or evaporating. dont forget to give it a title and completely label the axes. then answer the questions below.\n\n| minutes | degrees celcius | minutes | degrees celcius | minutes | degrees celcius | minutes | degrees celcius |\n| ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |\n| 0 | -15 | 9 | 15 | 18 | 60 | 28 | 100 |\n| 1 | -10 | 10 | 20 | 19 | 65 | 29 | 100 |\n| 2 | -5 | 11 | 25 | 20 | 70 | 30 | 100 |\n| 3 | 0 | 12 | 30 | 21 | 75 | 31 | 100 |\n| 4 | 0 | 13 | 35 | 22 | 80 | 32 | 100 |\n| 5 | 0 | 14 | 40 | 23 | 85 | 33 | 100 |\n| 6 | 0 | 15 | 45 | 24 | 90 | 34 | 105 |\n| 7 | 5 | 16 | 50 | 25 | 95 | 35 | 110 |\n| 8 | 10 | 17 | 55 | 26 | 100 | 36 | 115 |\n| | | | | 27 | 100 | | |\n\n1. at what temperature does ice melt? how do you know?\n\n2. at what temperature does water boil? how do you know?\n\n3. why doesnt the temperature of the water change while the ice is melting or boiling? (what is happening to the heat energy?)\n\n4. how does waters specific heat relate to its usefulness for life? (give as many examples as possible)

for such a small molecule, water has a very high specific heat. this means it takes a lot of energy to raise the temperature of water. another important property is the range of temperature for which water remains a liquid. when water evaporates, like from sweat, it also removes a lot of heat from our body. using the data below, create a graph to demonstrate the heating curve of water. the water starts out as ice and is heated until it is all water vapor. when you are finished with the graph, label the areas on the graph as: ice, water, steam, melting, or evaporating. dont forget to give it a title and completely label the axes. then answer the questions below.\n\n| minutes | degrees celcius | minutes | degrees celcius | minutes | degrees celcius | minutes | degrees celcius |\n| ---- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |\n| 0 | -15 | 9 | 15 | 18 | 60 | 28 | 100 |\n| 1 | -10 | 10 | 20 | 19 | 65 | 29 | 100 |\n| 2 | -5 | 11 | 25 | 20 | 70 | 30 | 100 |\n| 3 | 0 | 12 | 30 | 21 | 75 | 31 | 100 |\n| 4 | 0 | 13 | 35 | 22 | 80 | 32 | 100 |\n| 5 | 0 | 14 | 40 | 23 | 85 | 33 | 100 |\n| 6 | 0 | 15 | 45 | 24 | 90 | 34 | 105 |\n| 7 | 5 | 16 | 50 | 25 | 95 | 35 | 110 |\n| 8 | 10 | 17 | 55 | 26 | 100 | 36 | 115 |\n| | | | | 27 | 100 | | |\n\n1. at what temperature does ice melt? how do you know?\n\n2. at what temperature does water boil? how do you know?\n\n3. why doesnt the temperature of the water change while the ice is melting or boiling? (what is happening to the heat energy?)\n\n4. how does waters specific heat relate to its usefulness for life? (give as many examples as possible)

Answer

Brief Explanations:

  1. Ice melts when temperature is constant during phase change. From the data, temp stays at 0°C (minutes 3-6) as ice turns to water.
  2. Water boils at constant temp during phase change. Data shows temp at 100°C (minutes 26-30) as water turns to steam.
  3. Heat energy is used to break intermolecular bonds (latent heat) instead of increasing temperature during phase changes.
  4. High specific heat lets water resist temp changes, aiding life: regulates body temp (sweating), stabilizes climate (oceans), supports aquatic life.

Answer:

  1. Ice melts at 0°C. The temperature remains constant at 0°C from minutes 3 to 6, indicating the melting phase change.
  2. Water boils at 100°C. The temperature stays constant at 100°C from minutes 26 to 30, indicating the boiling phase change.
  3. Temperature doesn't change because heat energy is used to break intermolecular bonds (latent heat) rather than increasing kinetic energy (temperature).
  4. Water's high specific heat is useful for life as it stabilizes temperatures: oceans moderate climate, organisms maintain body temp via sweating, and aquatic environments have stable temps for life.