TIME REMAINING
 57:27
 The table describes how some substances were formed.
 Substance
 Description
 P
 Formed by boiling pure water
 Q
 Formed by combining three hydrogen atoms to every nitrogen atom
 R
 Formed by adding 5 g of sugar to 1 L of water
 S
 Formed by compressing carbon under high pressure
 Based on the given descriptions, which substance is most likely a mixture?
 P
 Q
 R
 S