Question

1. Which is not a mixture?
A. apple juice

B. maple syrup

C. table salt

D. air

2. Which statement is true for a pure compound but NOT true for a pure element?
A. The material may decompose when
heated

B. The material exists as a solid, liquid or a
gas

C. The melting point is always constant

D. The material is homogeneous

3. Iron and sulfur are poured together in a
beaker at room temperature. The result is
the formation of?
A. an element

B. The correct answer is not given

C. a compound

D. a mixture

Answer 1

You should first understand the definition/meaning of mixture and compound
@beaubrun

Answer 2

A MIXTURE is a material system made up of two or more different substances which are mixed but are not combined chemically.

Answer 3

COMPOUNDS : Combinations of two or more elements.