| NAME _______________________________________ | DATE ______________ |
| 1. | Explain why this statement is true
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| 2. | Why is it difficult to separate compounds that have similar structures?
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| 3. | Which of these compounds would have the largest Rf?
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| 4. | Rank the dyes in order from most polar (use a number 1) to least polar (use a number 7)? |
| net charge | polarity rank | |
| Blue 1 | ___________ | ___________ |
| Blue 2 | ___________ | ___________ |
| Red 3 | ___________ | ___________ |
| Yellow 5 | ___________ | ___________ |
| Yellow 6 | ___________ | ___________ |
| Red 40 | ___________ | ___________ |
| Green 3 | ___________ | ___________ |
| 5. | Which dye should have the highest Rf and which should have the lowest?
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