1. Consider this picture…
DO NOW
Consider this picture…
What do you see?
What do you think this is a picture of?
What is your evidence?

2. Consider this picture…
What do you think it is now?
What is your evidence?

3. Consider this picture…
Now do you know what the picture is of?
What is your evidence?

4. Consider this picture…
What do you think you are looking at?
What do you see?
What level are we looking at this picture on – macro, micro, molecular?

5. Consider this picture…
What has changed about what we see?
What level is the picture using now – macro, micro, molecular?

6. The Atom
On the molecular level (very zoomed in), we see the molecules.
These molecules are called atoms.

7. Introduction to the Atom

8. The Atom
An atom is the smallest unit of an element that keeps the properties of that element.

9. How small is an atom?
A single penny has 20,000,000,000,000,000,000,000 atoms

10. Important Information
Particle
Location
Relative Charge
Proton
Inside nucleus
Positive
Neutron
Neutral “0”
Electron
Outside nucleus
Negative

11. Inside the atom…

12. Inside the nucleus of an atom

13. Inside the nucleus of an atom

14. Outside the nucleus…

15. Do you know it?? Label the parts.- 1. 2. + 3. 4. 5.

16. How do you read the PERIODIC TABLE?

17. Key Points Atomic # = the number of protons.
Atomic mass= # protons + # neutrons.
The number of protons and electrons are the SAME.
Atomic mass – Atomic # = neutrons.

18. Check For Understanding
Give the mass number of the following elements.
Titanium _____
Tin _____
Mercury _____
Oxygen _____
Hydrogen _____

19. Check For Understanding
Give the atomic number of the following elements.
Helium _____
Nitrogen _____
Radon _____
Beryllium _____
Sulfur _____

20. How many Neutrons??

21. Guided Practice Example: Copper Atomic Mass Atomic Number Protons =
Electrons =
Neutrons =

22. Guided Practice

23. ELEMENT A substance composed of one type of atom.
Cannot be broken down further.

24. COMPOUND
A substance composed of two or more different elements are CHEMICALLY bonded together.

25. MIXTURE
Two or more substances that are mixed together but are NOT chemically bonded.

26. Element, Compound or Mixture?

27. Element, Compound or Mixture?

28. Element, Compound or Mixture?

29. Element, Compound or Mixture?

30. Element, Compound or Mixture?

31. Element, Compound or Mixture?

32. Activity! Play Atom Building Game Or
Complete an Atom Structure Worksheet