Answer:
An oatmeal cookie is a heterogeneous mixture, which contains multiple distinct components
oatmeal with raisins is a heterogeneous mixture. The raisins may be solid, but turn the bowl over and you will see the mixture as a whole most definitely acts like a liquid. Mud puddles are a heterogeneous mixture.
Explanation:
Answer: isotopes
Explanation: I remember this from when I took honors chemistry, they are know as isotopes.
The number of electrons is the atomic number
