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Question== what color is brown,blue and orange color pen made of ?
we think blue is made of green and yellow, brown is made of red and purple and orange is made of red and yellow.
step1 get a pack of color pens, water, spray, camera, chromatography paper and a note book to write.
step2 draw a dot on the chromatography paper and spray some water on it.
step3 wait and look what color can you see?
step4 record your findings.
the variable we will change is the colors of the color pen.