Chemistry question! Easy ten points!?

Question

Identify the following as pure substances or mixtures?

a. milk

b. the paper on which a book is printed

c. steel

Answer 1

All 3 are mixtures:

a. water, lactic acid, protein, calcium, etc.

b. wood pulp, bleach, other fibers, etc.

c. carbon and iron.

Hope this helps.

Answer 2

okay the first person to answer this was confused  a mixture means that the substance is not even through out.  like for example you moms chocolate chip cookies are a mixture because the chocolate chips are not spread out evenly through the cookie, all of the chocolate chips might be in one half of the cookie. however lemonade is a substance because no matter how many glasses you have each one will have the same sugar to water ratio.

so to answer your question

A-substance

B-mixture

C-substance