Two or more substances dispersed in one another but each retaining their own identity is a
compound
mixture
substance
solute

Which polymers are most closely related? a. protein and nucleic acids b. cellulose and starch c. nucleic acids and starch d. nucleic acids and cellulose

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?

How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?