1
Q
Rf= distance moved by substance/ distance moved by solvent
A
2
Q
What is an additive
A
a substance added to something in small quantities to improve or preserve it.
3
Q
What is an E-number
A
A code that identifies a food additive after it has been approved for use in food products
4
Q
If the dye travels further up the paper when dissolved in water it’s
A
More soluble
Chemistry 1
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