Name:__________________________________________ Date:___________________ Period:__________________ Chem I Matter Worksheet 2 Properties and Energy 1. Create a table that describes the three common states of matter in terms of their shape, volume, and compressibility. 2. Identify the following as an extensive or intensive physical property. a. Melting point b. Mass c. Density d. Length e. Electrical Conductivity 3. Lable the following as endothermic or exothermic processes: a. Vaporization b. Freezing c. Sublimation d. Deposition e. Combustion - 4. Calculate the amount of heat required to melt 25.7 g of solid methanol at its melting point. The heat of fusion of methanol is 101 J/g. 5. If three 100 g objects each absorb 5000 J of energy, which one will the highest temperature? Which will have the lowest temperature? Assume all three start off at 25⁰C. a. Alumium (C=0.897 J/g*⁰C) b. Water (C=4.184 J/g*⁰C) c. Iron (C=0.449 J/g*⁰C) 6. A piece of concrete absorbs 6525 Joules of energy and the temperture of the concrete increases from 20.0⁰C to 35.2⁰C. What was the mass of the concrete? The specfic heat of concrete is 0.84 J/g*⁰C. 7. Calculate the total heat absorbed by a 55.3 g piece of ice initially at -15.0⁰C to steam at 115.0⁰C. Sketch a curve of temperature vs. energy. The specific heat of ice is 2.03 J/g*⁰C, the heat of fusión of ice is 333 J/g, the specific heat of liquid waer is 4.184 J/g⁰C, the heat of vaporization of water is 2260 J/g and the specific heat of steam is 2.10 J/g*⁰C.