Name Data Sheet 1. Data Table TA Laboratory Date Section Experiment 1-Preparing a Heating Curved Time (min) Temperature (°C) Time (min) Temperature (°C) 0 18 اما 1 2 3 55 19 64 20 67 ما 21 69 71 45 8 22 73 10 23 75 6 11 24 76 7 15 25 77 8 18 26 9 25 27 78 10 29 28 79 11 34 29 80 12 38 30 80 13 44 31 80 14 48 32 80 15 52 33 80 16 55 34 17 59 35 80 80 15 Temperature when last piece of ice melts °C From Chemistry 1505L: General Chemistry Laboratory for the Allied Health Sciences, 2nd edition, revised printing by Michael Serra. Copyright © 2006 by Kendall/Hunt Publishing Company. Excerpted and adapted by permission. 13 3. Boiling point of water 4. Temperature change (AT) 5. Volume of water Mass of water 6. Number of calories needed to heat the water Show calculations Number of kilojoules needed to heat the water Show calculations

What is the melting point of the substance modeled by this heating curve? F 150 135 120 D E 105 90 75 C 60 45 30A 15 Heat (kJ) Created by E. Lee for Virtual Virginia (2021) Temp. (°C) B

O ||| Use the observation in the first column to answer the question in the second column. soft C W W Microsoft Microsoft 6.52.210... OSTATES OF MATTER Understanding the connection between vapor pressure, boiling... esc The enthalpy of vaporization of Substance E is smaller than that of Substance F. observation At 1 atm pressure, Substance A boils at -47. °C and Substance B boils at -8. °C. At 72 °C, Substance C has a vapor pressure of 80. torr and Substance D has a vapor pressure of 100. torr. Explanation ! 1 Q 2 Check 9,088 W question At any temperature where both substances are liquid, which has the higher vapor pressure? 280 Substance E Substance F Neither, E and F have the same vapor pressure. It's impossible to know without more information. Which has a higher enthalpy of vaporization? Substance A Substance B Neither, A and B have the same enthalpy of vaporization. It's impossible to know without more information. Which has a higher enthalpy of vaporization? #m 3 Substance C…

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Temperature Determine which temperature is higher, 110 °C or 180 °F. Determine which temperature is lower, 36 °C or 100 °F. The melting point of gallium is 29.8 °C. If you hold a sample of gallium in your hand, will it melt? Explain your answer.

8.66 What structural characteristics are needed for additives such as plasticizers?

Draw a molecular scale picture to show how a crystal differs from a liquid.

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The graph was drawn from data collected as a substance was heated at a constant rate. Use the graph an answer the following questions. 180 140 120 100 60 40 Phase Change Diagram B T LA 4 8 14 12 10 Time (minutes) D to a interesting fact.) Beyond point E, the substance is still in the are moving Substance Bolognium Unobtainium Foosium 16 At point A, the beginning of observations, the substance exists in a solid state. Material in this phase has is added to the volume and. shape. With each passing minute,. more rapidly which we detect by a substance. This causes the molecules of the substance to °C. The solid rise in the substance. At point B, the temperature of the substance is begins to At point C, the substance is completely. Material in this phase has. volume and between minutes 5 and 9 was used to convert the substance from a Between 9 and 13 minutes, the added energy increases the. or in a state. shape. The energy put to the substance to a time from point D to point E, the liquid…

The graph in Figure 5 below shows the variation in melting and boiling points for the elements in Group IV of the Periodic Table. Melting and Boiling Points of Group 4 elements 5000 |MPt (°C) |BPt C) 4000 3000 2000 1000 0+ Si Ge Sn Pb Figure 5: Diagram showing the melting and boiling points for the elements in Group IV of the Periodic Table. Figure taken from www.bing.com; accessed 19 May 2021. a) What is the general trend observed in Figure 5? b) Explain the variation in the melting and boiling points of the element in Group IV of the Periodic Table, shown in Figure 5, in terms of structure and bonding. { 11 }