Frozen Fire Andit Macarine Echin Paloma Andaluz Yamilo Bonono Ruperez Cabag Lagura Sulapas Espinosa Lumogdang. Phase Change. Introduction.
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Another change that may occur when heat is added to or taken out from an object is phase change. For example, you know that water can change from solid (ice) to liquid (water) or from liquid to gas (steam).
Mass of ice (m1): 423 g
Temperature (T1): 0 degree Celsius.
Weigh the liquid contents of the beaker and record its mass as m2 and its temperature as T2.
M2 = 295 g
T2 = 7 degrees Celsius
Time taken for the temperature to start rising from T2:
Continue boiling for the next 3-5 minutes and record the temperature as T3.
T3 = 99 degrees Celsius
The temperature increases.
Because of the factors that affects the melting of the ice, like the stirring that produces friction and gives off heat which makes melting possible and much faster.
Qtotal = mcice (Tm-Ti) + mHf + mcwater (Tv-Tm) + mHv + mcsteam (Tf-Tv)
= 0.423 kg (0.5 kcal/kg degree Celsius) (0 degree Celsius – 1 degree Celsius) + 0.423 kg (80 kcal/kg) + 0.295 kg ( 1 kcal/kg degree Celsius) (100 dgrees Celsius – 0 degree Celsius) + 0.295 kg (0.48 kcal/kg) (99 degrees Celsius – 100 degrees Celsius)
= 63.27 kcal
An ice cube placed in a container and settled in expected to meet and when it was stirred the faster is the melting process. As the ice turns into liquid, the temperature was observed to increase. Healing the melted ice using the burner affects the temperature and evaporation occurs then.