The above video named "Part 1" shows water being heated on a hot plate. No other substances were involved. Is this a chemical change or a physical change?
Explain your answer to question #1.
Is the system in the video labeled "Part 1" and open or closed system? Explain your answer.
Name two physical properties of the water in the above video.
Would you expect the mass of the system in the video labeled "Part1" to increase, decrease, or stay the same?
Why do you think that would happen to the mass?
Draw a "before" particle diagram and an "after" particle diagram of the system in the video "Part 1".
Is the process in the video labeled "Part 2" a chemical change or a physical change?
What evidence leads you to believe that it was a physical or chemical change?
Did the mass of the system increase, decrease, or stay the same?
We have a special term for the yellow solid stuff that formed in the test tube. This term was introduced in Unit 1. What is this term?
Draw a "before" particle diagram and draw an "after" particle diagram for video "Part 2".
Did the above video labeled "Part 3" show a chemical change, or a physical change?
What evidence leads you to believe that it was a physical or chemical change?
In video "Part 3" the mass of the system
Why do you think that happened to the mass?
The system in video "Part 3" was an
Draw a before particle diagram and an after particle diagram showing the process in video "Part 3".
State the Law of Conservation of Mass.