Heating Curve Worksheet Key 2017

Heating Curve Worksheet I1 Name Per Below is a diagram showing a typical healing/cooling curve for water. It reveals a wealth of information about the structure and changes occurring in water as it is heated or cooled through all three phases of matter at different temperatures. At the top of the diagram are pictures representing the typical particle arrangement as substances change through their states. Heat Added Heat removed 4 1 . There is something clearly wrong about the particle spacing in the pictures at the top. What is it? ( Hint . . . the pictures were drawn for most materials, not for water specifically ) . Spr-ead OLct ffazft ( l mct 102J& ^ 2 . Identify by letter ( A- E) in which section the following are found : 3 c. D =. B a. Freezing (if cooling) b. £ Particles farthest apart Boiling d. A Particle motion is most restricted Heat of fusion r. h. BCD g- D* Heat of vaporization i. A Least kinetic energy k ^ most potential energy m . AC t: n. BD o. S C> * j . A C £T i. & D is potential only All areas where particles move past each other All areas where kinetic energy is changing All areas where phase changes occur All areas in which the heat is making the particles move faster All areas in which the heat is breaking the attractions or bonds between particles All areas in which the particles are not changing their speed Heating / cooling curve for water p o E D 1 oo c O C4 C CD ZJ CD CD CL E »2 B 0°C A Heat Added Heat removed 1. Draw what is occurring (using dots to show particle movement and spacing) and give a brief explanation about what is occurring on the particle level for the following letters. S b d. U m fc L ocU & t s *t1 Allowing f\d&ed E pflr + i OI/ IA , < i /u + S rai fif li’n^s ^ o \loioir ^