Compounds and elements
COMPOUNDS AND ELEMENTS · IMAT Doutor1 / 1
A colourless liquid is heated and separates into two liquids that boil at different temperatures, each of which is then found to be pure. The original liquid was:
A
Impossible to classify from this evidence, since both liquids are colourless like the original
B
A mixture, because distillation separates by boiling point without breaking bonds
C
A compound, because it broke into two substances when heated to its boiling point
D
An element, since each of the two liquids obtained was found to be pure
E
An allotrope, since both liquids came from the same original substance
Keyboard: A–E to choose, Shift + letter to cross out, Enter to confirm.