Is cornstarch a mixture or pure substance?

Answer 1

Rice is a complex mixture.

Answer 2

You ask a very complex question.

A good place to start is the basic priciple that any compound naturally produced is a mixture since there will always be small amounts of residual compounds. Starch contains 2 families of compounds, amylose and amylopectic, these are both long chains of repeating glucose units with diffrent intermolecular bonds. The compounds are polymers, ie a long chain of repeating units and hence, there is also a variety in the number of repeating units in each of the compounds, the trait is called the "polydispersity" of the polymer.

So the correct answer would be that starch is a mixture of mixtures.

Answer 3

Its a mixture Because it has different particles. (2 or more different types of atoms but not a compound).

Answer 4

Starch is an organic, natural polymer of glucose.

Answer 5

Cornstarch is a pure substance because it is composed of a single type of molecule, which is starch.

Answer 6

it is a substance

Answer 7

Mixture