# Boiling Point Lab #1

• At what temperature did you predict the ice would completely melt?
20 Degrees
• At what temperature did you predict the water would boil?
30 Degrees
1. What usually happens to the temperature of a substance when heat is added? Support your answer with data from the graph.
The temperature goes up and the water starts bubbling and on the graph the line goes up.
• Notice that there are two sections on the graph where heat is being added but the temperature of the water does not change. Why? What is happening to the water molecules at these two stages? Support your answer with data from the lab experiment.
Because there is ice which is keeping the temperature the same.
• As the temperature of water increases, what happens to the energy of the water molecules?
they begin to separate and move around
• As the temperature of the water increases, what happens to the spaces between the water molecules? Use particle theory to explain what you observed. You might start your sentences with ” During my observations I noticed …….. this happened because in particle theory………….”
During my observations I noticed that the space between the molecules were bubbles this happened because in my particle theory the bubbles is air space
• Write 5 questions that you thought of during the lab. For example: “What made the bubbles?”

what would the boiling point of water with no ice? what would the boiling point be of a jar full of ice? How fast can it come to a boiling point? How slow can it come to a boiling point? Can it not have a boiling point