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Hi How Are You

In: People

Submitted By hikmet12
Words 336
Pages 2
Abdullah Alkhalil
9.9.2015
Phase changes for a substance Objective: what would the temperature be like if you heated up the water with ice in it. Materials: * 400 mL beaker * Ice and water * Timer * Hot plate * Temperature probe * Computer / lab pro app
Procedures:
1. Wear the safety goggles and wear lab apron 2. Open the lab pro app on he computer 3. Find the mass of the beaker 4. Put 4 ice cubes and 30 mL of water in the beaker 5. Set the hotplate to high (put the beaker on the hot plate) 6. Put the thermometer in the beaker and press collect in the computer 7. Record time vs temperature every 30 seconds 8. Press stop on the computer 9. Return the lab apron and the safety goggles to its place 10. Clean up the after the experiment and log off the computer Item | Mass (in grams) | 400 mL glass beaker | 158.22 grams | 4 ice cubes with water | 69.97 grams |

Time (in minutes) | Temperature (Celsius) | 0 | 17.7 | 0.5 | 11 | 1 | 5.4 | 1.5 | 5.3 | 2 | 8.4 | 2.5 | 14.4 | 3 | 24.4 | 3.5 | 37.8 | 4 | 53.3 | 4.5 | 70.1 | 5 | 86 | 5.5 | 93.9 | 6 | 98.4 | 6.5 | 99.3 | 7 | 97.3 | 7.5 | 99.9 | 8 | 99.6 |

Qualitative data : At first there was Ice & water then it started to melt. Then when it melted it started to boil after a while at 99.6.
Results : the independent variable is the amount of water & ice. 4 ice cubes and 30 mL of water is used. The temperature will be the dependent variable. Its measured in Celsius. The constant variable is the hot plate temperature.
Conclusion I learned that because we are below the sea level, the water boils before it gets to 100 degreses Celsius. I thought that it will boil at 100 desgrees Celsius but it started boiling at 98.4 degres…...

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