Answer the questions below in relation to the following generic phase diagram. At a constant temperature, what would you do to cause this substance to change from the liquid phase to the solid phase. Phase change vocabulary and reading comprehension the graph was drawn from data collected as a substance was heated at a constant rate. A phase diagram is a graphical way to depict the effects of pressure and temperature on the phase of a substance. Solid, liquid, gas, vaporization, condensation, freezing, melting melting part 2. Refer to the phase diagram below when answering the questions on this worksheet. Draw arrows showing which direction heat is being transferred, into, or out of, the ice cube. The regions around the lines show the phase of the substance and the lines show where the phases are in equilibrium. Water boils and absorbs latent heat of vaporization. A phase diagram is a chart showing the thermodynamic conditions of a substance at different pressures and temperatures. When a second compound is introduced to the system forming a homogeneous solution however, the phase diagram drastically changes. Use the phase change diagram above to answer the following questions. Use the graph and vocabulary from first page to answer the following questions.
Use the graph and the words in the word bank to complete the statement. Physics is fun if you learn it in a visual strategy such as a circular diagram like the above one. Water has the highest value of latent heat of evaporation of all substances true, false true 4. A phase diagram is a graphical way to depict the effects of pressure and. Boiling and condensing both occur at the boiling point 100. From point c to point d on the phase change diagram, as time. After students receive copies of the phase change drawings page, the phase change drawings instructions should be revealed, one at a time, to students. So the transfer of heat into a system can change the temperature of the system. The practice questions on the quiz will test your understanding of the diagrams themselves, what one. Worksheet heat transfer during phase changes ice cube melting on a counter top. Phase change worksheet henry county public schools. Phase diagram for tastegudum 0 10 20 30 40 50 60 70 80 90 100200 100 0 100 200 300 400 500 600 700 800 temperature c. The greater the materials internal energy, the higher the temperature of that material.
Thermochemistry worksheet energy changes involving phase changes sample problem. Phase diagram worksheet answers refer to the phase diagram below when answering the questions on this worksheet. We measure this kinetic energy with a thermometer as temperature. For each of the questions on this worksheet, refer to the phase diagram for tastegudum. Ensure that you can understand a phase diagram to complete. For water, the value for the latent heat of vaporization is 6. Enthalpy of state changes heat transfer during state changes solid, liquid, gas you know from past experience that heat is needed to melt and ice cube or boil water. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Steam absorbs heat and thus increases its temperature. Phase changes involve absorption or emission of heat.
During the phase change, both phases exist at equilibrium. Murdoch page 11 of 63 website upload 2014 phase equilibrium. Ice liquid a is ice releasing heat or taking heat from the environment when it melts. When solving problems involving phase changes, it is helpful to draw a diagram to visualize the different steps involved.
Phase change chart free phase change chart templates. Lets take a look at phase change as it pertains to water. Students do their best to follow the instructions as exactly as possible. The graph was drawn from data collected as 1 mole of a substance was heated at a constant rate.
Evaporation vaporization from the surface of a liquid. Relate changes in thermal energy to changes of state. The graph was drawn from data collected as a substance was heated at a constant rate. Mar 04, 20 in this video i describe phase change diagrams and how to interpret them. At a pressure of 1 atmosphere, what is the normal freezing point of water. This will apply to all substances, but we are all most familiar with water. Phase change diagrams worksheets teacher worksheets. Phase change diagram and computing how much energy it takes to. You can also create your own phase change chart easily with edraw max, which has included many predefined shapes. Once you find your worksheet, click on popout icon or print icon to worksheet to print or download. Callister, chapter 9 and 10 a phase in a material is a region that differ in its microstructure and or composition from another region homogeneous in crystal structure and atomic arrangement have same chemical and physical properties throughout. Phase change worksheet the graph was drawn from data collected as a substance was heated at a constant rate.
Liquid water has the highest specific heat of all liquids except for nh3 true, false true 2. The curves indicate the conditions of temperature and pressure under which equilibrium between different phases of a substance can exist. Students will work in collaborative groups to determine where each statement will go into the venn diagram. Dec 07, 2015 3 phases of matter and how to read a phase change diagram. Circle the correct word in parentheses in each of the following sentences.
Chemists quantify the amount of heat needed for a state change as molar heat or the amount of heat needed for one mole of substance. See what you know about phase diagrams and what theyre used for. Substance melting point boiling point bolognium 20 c 100 c unobtainium 40 c 140 c foosium 70 c 140 c which of these three substances was likely used in this phase change experiment. Solid phase, liquid phase, gas phase, triple point, critical point. This quiz and worksheet focus on the phase diagram of water and how it relates to that of other substances. At point a, the beginning of observations, the substance exists in a solid state. Thermochemistry worksheet energy changes involving phase changes. What happens to a substance when the slope of the temperatureheat added line is 0. For example, the addition of a solute to a pure solvent making a solution. Phases of matter and phase change diagrams youtube. Phase change drawings is designed to follow the phase change heat curve activity. Phase diagram worksheet 1 2 normal melting point 7. Put the slope calculated in 2a, above, into words by filling in the blanks. This is a free customizable phase change chart template provided to download and print.