Effects of Salt on the Melting Rate of Ice - Lab Report Example

Effects of Salt on the Melting Rate of Ice s Effects of Salt on the Melting Rate of Ice Objective: to investigatethe effect of dissolved salt on the melting rate of ice. Hypothesis The null hypothesis is that the salty water would melt faster than pure water. The second hypothesis is that the more the impurities in water, the faster the melting point (Van der Put, 2013). Materials and equipment Two Thermometers Ice cubes Two bowls Salt- sodium chloride (NaCl) Stopwatch Procedure Take two equal bowls and put the same amount of ice in each.

Put some salt on the ice in one of the bowls. Label it A. Record the temperature of each bowl. Observe the ice as it melts completely in both bowls, and measure the temperature in both bowls at an interval of 40 minutes Results Time (minutes) Temperature of bowl A(°C) Temperature of beaker with pure ice(°C) starting -180 -180 40 -146 -135 80 -76 -80 120 -18 -58 160 0 -16 200 0 0 The results of the experiment were that salty ice melted faster than pure ice. The later melted with an average of 200 minutes while the former melts at an average of 160 minutes.

Conclusion The results indicate that the null hypothesis should be accepted, because the pure ice melted slower than the ice with salt. The ice with salt melted in an average of 160 minutes while the pure ice melted at around 200 minutes. The second hypothesis was also accepted since the salt, in this case, is the impurity, and the ice that had the salt melted faster than the pure ice. References Van der Put, P. J. (2013). The inorganic chemistry of materials: how to make things out of elements.

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