Is a chocolate chip cookie heterogeneous mixture homogeneous or pure substance?

* Heterogeneous mixtures have components that are not evenly distributed throughout. You can easily see the different parts of the mixture.

* Homogeneous mixtures have components that are evenly distributed, meaning they appear the same throughout.

* Pure substances are made up of only one type of molecule.

In a chocolate chip cookie, you can clearly see the chocolate chips, flour, sugar, and other ingredients. They are not evenly distributed, so it's a heterogeneous mixture.