An atom is the basic building block of matter. an atom is made up of three smaller parts: the proton, neutron, and electron. which item is the largest?

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

Chemistry worksheet - i am not sure what they are asking for exactly?

The arrangement of particles is most ordered in a sample of