Question
Describe a method to investigate how the temperature changes when different masses of ammonium nitrate are dissolved in water. You do not need to write about safety precautions. [6
Answer
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(206 Votes)
Lowri
Expert · Tutor for 3 years
Answer
To investigate how the temperature changes when different masses of ammonium nitrate are dissolved in water, one could set up a controlled experiment. This would involve measuring a specific volume of water and its initial temperature, then adding a measured mass of ammonium nitrate to the water and stirring until it is fully dissolved. The temperature of the solution would then be measured. This process would be repeated with different masses of ammonium nitrate, each time measuring the temperature of the solution after the ammonium nitrate has dissolved. The data could then be analyzed by plotting a graph of the mass of ammonium nitrate against the change in temperature.
Explanation
## Step 1:First, we need to set up a controlled experiment. This involves taking a specific volume of water and measuring its initial temperature. This will be our control variable, meaning it will remain the same throughout the experiment.## Step 2:Next, we will measure out a specific mass of ammonium nitrate. This will be our independent variable, meaning it will change for each trial of the experiment. ## Step 3:We will then add the ammonium nitrate to the water and stir until it is fully dissolved. ## Step 4:After the ammonium nitrate has dissolved, we will measure the temperature of the solution. This will be our dependent variable, meaning it will change based on the mass of ammonium nitrate we added.## Step 5:We will repeat this process with different masses of ammonium nitrate, each time measuring the temperature of the solution after the ammonium nitrate has dissolved. ## Step 6:Finally, we will analyze the data by plotting a graph of the mass of ammonium nitrate (independent variable) against the change in temperature (dependent variable). This will allow us to see the relationship between the mass of ammonium nitrate and the temperature change.