<p>MR. SURRETTE VAN NUYS HIGH SCHOOL</p><p>CHAPTER 2: MATTER AND ENERGY WORKSHEET</p><p>Equations: Tc = T – 273.15, TF = (9/5) Tc + 32, Tc = (5/9) (TF – 32), D = m/V Conversions: 1 cal = 4.184 J, 1 Calorie = 1 kcal = 1000 c, 1 kwh = 3.6 x 106 J, 1 kJ = 1000 J</p><p>PART I. Determine if the following substances are: pure element, pure compound, homogeneous mixture, or heterogeneous mixture.</p><p>1. NaCl (s) 2. Sugar water (aq) 3. Copper oxide (s) 4. Copper wire (s)</p><p>PART II. Indicate whether each of these is a physical or a chemical change:</p><p>5. Dry ice at room temperature 6 An iron nail rusts in the backyard 7. Copper becomes copper oxide</p><p>PARTIII. Answer the following.</p><p>8. This state of matter ( solid, liquid, or gas) has the least restricted motion. 9. This state of matter usually has the highest density. 10. Water found on earth’s surface at 280 K is in this state of matter. 11. These solids have a definite geometric pattern with repeating units. 12. Anything that takes up space and has mass. 13. Temperature is a form of this type of energy. 14. The amount of energy required to raise the temperature of one gram of water one degree Celsius.</p><p>PARTIV. Solve the following problems. Show all work.</p><p>15. Convert 459 J into Calories. [ANS: 1.10 x 10-1 C]</p><p>16. Convert 217 Calories into kwh. [ANS: 2.52 x 10-1 kwh]</p><p>17. Convert 4589 calories into kilojoules. [ANS: 1.920 x 101 kJ]</p><p>18. Convert 92 kwh into Calories. [ANS: 7.9 x 104 C]</p><p>19. Convert 100.3o F to Celsius [ANS: 37.94 oC]</p><p>20. Convert – 60.0o C to Kelvin [ANS: 213 K]</p><p>21. Convert 78.0o F to Kelvin [ANS: 299 K]</p><p>22. A solid cube 3 cm on a side has a mass of 40 g. What is its density ? [ANS: 1.5 g/cm3]</p><p>CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL</p><p>CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL</p><p>CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL</p><p>CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL</p><p>CHAPTER 2: MATTER AND ENERGY HEAT CAPACITY AND TRANSFORMATION HANDOUT</p><p>HEAT CAPACITIES</p><p>Substance Calories per Degree per Gram Calories per Degree per Mole</p><p>CaCO2 0.205 20.52</p><p>H2O(liquid) 1.000 18.02</p><p>H2O(solid) 0.485 8.74</p><p>MgO 0.208 8.38</p><p>Pb 0.031 6.32</p><p>Fe 0.108 6.01</p><p>Al 0.213 5.74</p><p>HEATS OF TRANSFORMATION FOR H2O</p><p>Associated Calories per Calories per Change of State Energy Term Gram Mole Heat Flow</p><p>Solid  Liquid Heat of fusion 79.8 1436 Absorbed</p><p>Liquid  Solid Heat of 79.8 1436 Released crystallization Liquid  Gas Heat of 539.4 9715 Absorbed vaporization Gas  Liquid Heat of 539.4 9715 Released condensation</p><p>CHEMISTRY SCIENCE DEPARTMENT</p>