Presentation on theme: "MRS.FENTRESS PIERRE BERNARDO Table of contents 1. Title 2. Table of contents 3. Question 4. Hypothesis 5. Material 6. Procedures 7. Conclussion 8. Question."— Presentation transcript:
Table of contents 1. Title 2. Table of contents 3. Question 4. Hypothesis 5. Material 6. Procedures 7. Conclussion 8. Question 9. Bibliography
Question? How can you make invisible ink with ; water, cooking oil, or vinegar, lemon juice, rubbing ALCOHOL ?
Hypothesis Is it properly(rubbing alcohol) alcohol works best in making invisible ink because it can dry easily.
Materials An ounce or two of lemon juice or vinegar in a cup or bowl cotton swabs or paintbrush thin white paper a lamp with a 100-watt bulb
Procedures Think about what you want to say in your mysterious note! Next, dip the cotton swab or paintbrush (even a toothpick will work) into the lemon juice or vinegar. Write a message on the paper. Wait for it to dry completely. It should be invisible when it dries. For this step, you should ask an adult to help you, because 100-watt light bulbs are very hot. Hold the paper over the light bulb (don’t stare into the light!), moving it slowly so that all possible parts of the paper are exposed to the heat of the light bulb. The mystery message should appear as the paper heats up.