Phase Changes and Temperature Behavior

Mr. Gustin conducts a lab experiment on lauric acid to observe its phase changes. The experiment involves melting and freezing lauric acid while monitoring temperature changes. The key observation is that the temperature remains constant at 47 degrees Celsius during phase changes, indicating the melting and freezing points. The video concludes with questions for further exploration.

What is the primary focus of the experiment involving lauric acid?

• To measure the density of lauric acid

• To observe the color change of lauric acid

• To study the phase change of lauric acid

• To determine the pH level of lauric acid

What is the initial temperature of the lauric acid before heating?

• 52 degrees Celsius

• 41 degrees Celsius

• 47 degrees Celsius

• 24 degrees Celsius

During the melting process, what happens to the temperature of lauric acid?

• It remains constant

• It increases steadily

• It fluctuates randomly

• It decreases steadily

What is observed when lauric acid is placed in a cold water bath?

• It evaporates

• It becomes cloudy and starts freezing

• It changes color

• It starts boiling

What unusual behavior is noted during the freezing process of lauric acid?

• The temperature decreases rapidly

• The temperature increases

• The temperature fluctuates

• The temperature remains constant at 47 degrees Celsius

What happens to the temperature of lauric acid when the thermometer breaks free from the solid?

• It remains constant

• It decreases

• It shoots up

• It fluctuates

What is the significance of the 47 degrees Celsius temperature in the experiment?

• It is the melting and freezing point of lauric acid

• It is the temperature of the hot plate

• It is the room temperature

• It is the boiling point of lauric acid

What is a key observation about temperature during phase changes?

• Temperature decreases rapidly

• Temperature increases rapidly

• Temperature fluctuates

• Temperature remains constant

What question does the experiment raise about phase changes?

• Why does the density change during phase changes?

• Why does the color change during phase changes?

• Why does the temperature fluctuate?

• Why does the temperature remain constant during phase changes?

What further research question is suggested by the experiment?

• How does lauric acid's density change with temperature?

• What is the pH level of lauric acid?

• What is the effect of pressure on lauric acid's phase change?

• How does lauric acid react with other chemicals?