Materials that do not allow electrons to flow easily are called .

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Why is the structure of molecule important to its function?