1. Atoms
General Science 2

2. CA Standard 3
Elements have distinct (unique) properties and atomic structures. All matter is comprised (made) of one or more of over 100 elements
3a: students know the structure of the atom and know it is composed of protons, neutrons, and electrons

3. All matter is made of atoms

4. What is matter?
Matter is anything that has ________ and________

5. Matter is anything that has mass and volume
What is matter?
Matter is anything that has mass and volume

6. What are atoms? Atoms are the smallest particles
that an element can be divided into
each element has its own type of atom

7. How small are they? There are twenty thousand billion
billion atoms in one penny

8. What are atoms made of?
Protons (+)
Neutrons ( )
Electrons (-)

9. What’s in the center of an atom?
The nucleus is in
the center of atoms
Protons (+) and
Neutrons are in the nucleus.

10. Where are the electrons?
Electrons (-) travel around the nucleus

11. Stop and review What are the 3 parts of an atom? Protons Neutrons
electrons
Protons

12. What parts are in the nucleus?
Protons
Neutrons

13. Which part moves around the nucleus?
Electron

14. - + Charges Protons are positive (+) Electrons are negative (-)
Neutrons are neutral (no charge) + -

15. Bonus question: What charge does the nucleus have?
Positive

16. How do atoms relate to the periodic table?

17. Each element in the periodic table has a different atom

18. Name 3 elements that you know
Oxygen
Gold
Silver
Calcium
Helium
Chlorine
Hydrogen
Nickel
Copper

19. Each element has a different atom
Helium Atom
Gold Atom

20. The atomic number is the number of protons.
Helium-atomic number 2
2 protons

21. How many protons does Oxygen have?
Atomic number 8
8 protons

22. In summary
All matter is made of

23. In summary
All matter is made of atoms

24. In summary
All matter is made of atoms
Atoms have 3 parts:

25. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons

26. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has

27. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has the protons and neutrons

28. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has the protons and neutrons
The periodic table shows

29. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has the protons and neutrons
The periodic table shows all the different atoms

30. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has the protons and neutrons
The periodic table shows all the different atoms
The atomic number is the number of

31. In summary All matter is made of atoms
Atoms have 3 parts: protons, neutrons, and electrons
The nucleus of the atom has the protons and neutrons
The periodic table shows all the different atoms
The atomic number is the number of protons