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Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9 PDF Download

Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9

Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9

Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9

Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9

The Procedure:

Real Lab Procedure:

  • Take some ice cubes and dry them using a filter paper and quickly put them in a beaker.
  • Place the beaker over a wire gauze kept over a tripod stand.
  • Suspend a thermometer (temperature range -10 to 110°C) with the help of a clamp stand so that its bulb remains in the middle of the ice cubes.
  • Ice cubes are moderately heated by a gas burner and stirred continuously using a glass rod.
  • Note the temperature (t1) when the ice starts melting.
  • Continue heating the ice.
  • Note the temperature (t2) when the ice has melted completely.
  • Record your observations in tabular form.

 

Precautions:

  1. The bulb of the thermometer should be kept surrounded with ice cubes.
  2. Ice should be stirred regularly to keep a uniform temperature throughout.
  3. Note temperature by keeping your eyes in line with the level of mercury.
The document Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science | Science Class 9 is a part of the Class 9 Course Science Class 9.
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FAQs on Procedure - To Determine the Melting Point of Ice, Lab Experiment, Chemistry, Class 9 Science - Science Class 9

1. What is the purpose of determining the melting point of ice?
Ans. Determining the melting point of ice helps in understanding the physical properties of water, as well as its phase transition from solid to liquid. It also serves as a reference point for temperature measurement and calibration of thermometers.
2. How is the melting point of ice determined in the lab experiment?
Ans. In the lab experiment, a sample of ice is slowly heated in a controlled manner. The temperature is measured using a thermometer, and as the ice melts, the temperature remains constant at 0 degrees Celsius until all the ice has melted. This constant temperature is the melting point of ice.
3. Why is it important to control the heating rate during the determination of the melting point of ice?
Ans. It is important to control the heating rate during the determination of the melting point of ice to ensure accurate results. If the heating rate is too fast, the temperature of the ice may rise above its melting point, leading to inaccurate readings. A slow and controlled heating rate allows for the precise measurement of the melting point.
4. How does the melting point of ice relate to its purity?
Ans. The melting point of pure ice is 0 degrees Celsius. However, impurities present in ice, such as dissolved minerals or gases, can lower the melting point. Therefore, if the melting point of ice is below 0 degrees Celsius, it indicates the presence of impurities in the ice sample.
5. Can the melting point of ice be used as a standard reference point for temperature measurement?
Ans. Yes, the melting point of ice serves as a standard reference point for temperature measurement. It is commonly used to calibrate thermometers and establish the Celsius temperature scale. By ensuring that ice melts at 0 degrees Celsius, thermometers can be accurately calibrated for various scientific and everyday applications.
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