Classify each of the following as a pure substance, solution, or heterogeneous mixture:
b) dry ice
c) krypton gas
d) a rusty nail
e) table salt
f) glass of lemonade
Justify your answers.
No equations obviously...
The Attempt at a Solution
Here's what I figure...but I'm not sure!!!
a) blood - no idea...
b) dry ice - pure substance (why???)
c) krypton gas - pure substance (single element)
d) rusty nail - heterogeneous mixture (rust is produced by oxidizing the iron)
e) table salt - solution (homogeneous mixture of Na and Cl atoms)
f) glass of lemonade - solution?? (I'm not sure because my book said milk is heterogeneous but coffee is a solution)
Yeah...so if you know, help me out! And if my justifications aren't right, please let me know that too :)
Thanks to all.