Question

Jamil wants to measure the rate at which an ice cube melts. He has collected the following items. The petri dish is transparent.
Ice cube Graph Paper Petri Dish

a) How could he set them up to measure the rate at which the ice cube melts?

Answer 1

Answer:

For determining the rate at which an ice cube melts at room temperature, Jamil needs an ice cube, transparent petri plate, graph paper along with a pipette and measuring cylinder for measuring the amount of water that is formed at the end of each time point. He also requires a stop watch for noting the time at the end of which he needs to take the reading.

The experiment is conducted as follows:

• Place the ice cube in a dry and clean petri plate at room temperature and note the time as 0 min and volume of water formed as 0 ml.
• Start the stop watch
• At the end of 2 mins. collect the water formed using a pipette into a measuring cylinder and note the volume of the water that is collected (x)
• For the third reading after another 2 mins. add the melted water to the measuring cylinder and note the increased reading (y). Calculate y-x to determine the amount of water collected for this time point.
• Continue this experiment till the ice completely melts and all the water is collected in the measuring cylinder.
• Plot a graph of time versus amount of water collected at each time point.