Which one of the following is not a characteristic of a compound?
A
Composition is variable.\
B
All particles of compound are of only one type.
C
Particles of compound have two or more elements.
D
Its constituents cannot be separated by simple physical methods.
Correct Answer: All particles of compound are of only one type.
A mixture is made from different substances that are not chemically joined.Compound:
•Two or more elements combine together chemically to form a new substance called compound.
•The different elements are chemically joined together.•Compounds are homogeneous, i.e. their properties are the same throughout
•The compound has properties different from the elements it contains.
•It can only be separated into its elements using chemical reactions. (not using physical methods)
•During the formation of a compound from its elements, a certain amount of energy in the form of heat, light, electricity is either absorbed or evolved
