The document describes how to make invisible ink using lemon juice that can later be revealed by heating. It lists the necessary materials of lemon, water, spoon, bowl, q-tip, white paper, and heat source. The procedure explains how to squeeze lemon juice into a bowl, add some water, mix, and use a cotton swab to write a hidden message on paper that becomes invisible as it dries. Later, heating the paper with a candle or other heat source will cause the message to magically reappear. The explanation is that lemon juice oxidizes and turns brown when heated, allowing the diluted juice to be applied invisibly until revealed with heat.

1. Invisible InkEscuelaPrimaria MéxicoStudents:García Perez Rene Alejandro

2. Garza Tenorio Arturo Vicente

3. Mireles Benavides Paola Elizabeth

4. Santos Garza Luis HerveyTeacher Tomás E. Ruiz Rivera

5. Materials:Lemon

6. Water

7. Spoon

8. Bowl