Smart Paper Regular Paper. Compare and contrast the ‘smart paper” with regular paper. Careful observations are key. . Smart Paper. When you iron the paper? Can you explain why this is happening? . Observe what happens.
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Compare and contrast the ‘smart paper” with regular paper.
Careful observations are key.
Can you explain why this is happening?Observe what happens
With the peers at your table, generate a list of other possible ways to write with this paper?
What if we tried to……[????] with the paper.
Think! We are going to have to be creative if we are going to figure out how this paper works.What else works?
Based on the list that your group just came up with, investigate how this paper works.
Remember to follow all safety procedures .Let’s experiment
How does the invisible ink become visible? investigate how this paper works.
Why is heat important in the formation of color in smart paper?
List two different ways you can cause color to form.
What would happen if the two invisible-ink reactants were frozen? Would color form?
Would color form after you allow the invisible-ink reactants to thaw?
Is the ink in the pulp of the paper or is it a coating?
What is coated on smart paper?Investigation questions
We are studying solid solutions. investigate how this paper works.
What does thermal paper have to do with solid solutions?Connection
Thermal paper was developed by NASA in the 1950’s due to a need for a very small printer.
Today they are used in many, lightweight devices such as adding machines, cash registers, and credit card terminals.
Solid, colorless dyes reacts with a solid acidic compound when they are melted by heat.Background Info