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Asociación Educación y Familia
Centro Escolar Aldebarán
Physical Science 8th Grade
4.1 Midterm Study Guide
Cost: 10%
Due on: Tuesday, October 2nd,2012

1. Complete the following chart by transforming the temperatures provided below. (0.1 % each)

Temperature | Celsius | Fahrenheit | Kelvin |-31.46 ° F | | | |
Boiling Point of Cl | | | |
701.35 K | | | |
Melting Point of Na | | | |
-105.03 ° F | | | |
1105.26 K | || |
Melting Point of P | | | |

2. How much energy is required for changing the temperature of 10.03 kg of pulverized calcium, from roomtemperature to 31.57 ° C? (1%)

3. Determine the amount of energy that is needed to reduce to 13.6 ° C the temperature of 105.7 kg of hot ash, if itsinitial temperature was 48.3 ° C? (1%)

4. How much energy is needed to change the temperature by 7.015 ° C of a 0.39 kg lithium battery? (1%)

5.Determine the mass of a container full of salt that experienced a change in temperature of 7.25 ° C after applying 12,570.5 J of heat energy on it. (1%)6. 5.79 kg of an unknown material are heated applying 174,568.5 J of energy on it. Its temperature changed from 43 ° C to 68 ° C. Identify this material.(1%)

7. A person ate a normal M&M’s pack (230 cal). Will this be enough energy to do the following tasks: (3%)
* pushing a 95 kg box at avelocity of 1.95 m/s during 650 seconds.
* pushing another box with a mass of 103 kg at the same rate.
* Using 175.83 calories in a soccer game.