Question

1. Which of the following property does not describe a compound? a.It is
composed of two or more elements (b) It is a pure substance. (c) It can be
separated into constituents by physical means (d) It is mixed in any
proportion by mass.
O a
a and b
O b and c
O cand d
O a and d​

Answer 1

Answer:

c and d

Explanation: it can only be separated by chemical means/reactions. (mixtures are the ones that can be separated by physical means like distillation or filtration). the proportions are formed by moles not masses (like how in chemical reactions, the amount of product formed is decided my its moles)

Answer 2

Answer:

c and d is the answer