1. Chemistry, Part 1: Atoms
Science
With
Mr. Comans

2. In this Powerpoint you will find:
Structure of Atoms What are atoms? What are the particles in atoms? What is an electron cloud? How do the particles’ masses compare?
This information goes along with pages in the Green Science Explorer book.

3. In This Powerpoint:
Atoms and Elements What is an atomic number? What are isotopes? What is a mass number?
This information goes along with page 46 in the Green Science Explorer book.

4. But first…

5. Protons, neutrons, and electrons

7. Structure of an Atom
What is the difference between molecules, elements, and compounds?

8. Structure of an Atom
Nucleus-the central part of the atom, is made from protons (+) and neutrons (0). The electrons (-) are found in a cloud around the nucleus.

9. Structure of an Atom
What particles make up nucleus?

10. Structure of an Atom If a proton had the mass of a baseball…
…an electron would be the mass of one grain of rice.

11. Structure of an Atom

12. Structure of an Atom

13. Atoms and Elements
Atomic number- the number of protons in the nucleus of an atom
Atomic Mass- the number of protons and neutrons in the nucleus of an atom.

14. Atoms and Elements

15. Atoms and Elements

16. Atoms and Elements

17. Atoms and Elements