Sodium Is a Highly Reactive Metal and Chlorine Is a Toxic

Multiple Choice

Sodium is a highly reactive metal and chlorine is a toxic gas, but when they come together the resulting material, sodium chloride, is essential for life. Which of the following is true when sodium and chlorine are brought into contact with one another?

A) They form a heterogeneous mixture.
B) They form a homogenous mixture.
C) They neutralize each other.
D) They form a compound.