1.

Define a compound. Give two points of evidence to show that sodium chloride is a compound.

Answer»

A chemical compound is a substance made up of two or more elements combined together chemically in a fixed proportion by mass. 

Sodium chloride is a compound because 

1. It consists of two elements sodium and chlorine and the product formed from these is different from the constituent elements. 

2. It has a fixed proportion of constituents by mass.



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