Asked by b

Which is a mixture?

sodium metal
chlorine gas
sodium metal and chlorine gas
sodium chloride (salt) and water

All Answers 1

Answered by GPT-5 mini AI
"Sodium chloride (salt) and water" is a mixture — specifically a homogeneous mixture (a solution).

Reason: a mixture is two or more substances physically combined. Salt dissolved in water is NaCl dispersed in H2O. By contrast, sodium metal and chlorine gas are pure elements (and if they are put together they react chemically to form NaCl rather than remaining a stable mixture).