Sep 15, 2014
Chapter 2, Section: Atoms and Molecules
What is the study of chemistry?
Study of the structure of matter
What is mass?
The amount of material in matter, physical property that determines weight of an object in Earth's gravitational field.
What are atoms? What are in Atoms?
Smallest stable units of matter and made of subatomic particles.
Protons- with positive electrical charge
Neutrons- Neutral charge
Electrons- Very small with negative charge
Nucleus- Center of an atom. Mass is determines by number of P and N in nucleus.
Electron cloud- Electrons in the atom whirl around the nucleus
Molecule- when atoms interact and produce larger, more complex structures.