1. Do Now
Directions:
Complete the independent practice that we started in class on Tuesday.

2. Today’s Schedule 1. Do-Now Atomic structure independent practice
Atomic structure dry erase board practice
Objectives:
Today we will…
8.5(B) identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity
8.5 (D) Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.
Dark Matter

3. Independent Practice

4. Chemistry Video Evidence of Chemical Reactions
animation of atom and moving electrons.

5. Atomic Structure
Letter S represents the _____.

6. Atomic Structure
Letter T represents the _____.

7. Atomic Structure
Letter Q represents the _____.

8. Atomic Structure
Letter R represents the _____.

9. Atomic Structure
You know the identity of an element by counting the number of ____.

10. H Atomic Structure How many protons? Electrons? Neutrons? 1 1.008
Hydrogen

11. O Atomic Structure How many protons? Electrons? Neutrons? 8 15.999
Oxygen

12. Na Atomic Structure How many protons? Electrons? Neutrons? 11 22.999
Sodium

13. Atomic Structure
What is the identity of this element?

14. Atomic Structure
What is the identity of this element?

15. Atomic Structure
How many neutrons in an atom of Fluorine?

16. Atomic Structure
How many neutrons in an atom of Boron?

17. Atomic Structure
How many neutrons in an atom of Magnesium?

18. Atomic Structure
Which element has 33 protons?

19. Atomic Structure
Which element has 79 protons?

20. Atomic Structure
Which element has 82 protons?

21. Do Now: Copy the following notes into your student page.
Use the pencils at your desk to shade the periods on the periodic table.
Use the pencils at your desk to shade the groups on the periodic table.
Periods
Groups
Horizontal Rows
Vertical Columns
Number of Energy Levels
Number of Valence Electrons
Chemical Reactivity Similar
Chemical Properties Similar

22. Work with a partner and use your periodic table to complete the table.

23. Review: How to make a molecule…
Formula
Visual model
H2O
Subscript
No Subscript,
There is only 1
atom of oxygen in
the molecule

24. Explore: Eggs-tracting the Elements
Count the atoms in each molecule.
Record on your answer page.
Voice level 2
Time= 15 minutes.
Label the periodic table with groups and periods 2 1 4
H2SO4

25. Elements/ Number of Atoms
Explain: Chemical Formulas, page 27
Make a table like this in your INB.
Compound Name
Chemical Formula
Elements/ Number of Atoms
Total Number of Atoms
Label the periodic table with groups and periods

27. The model above is best represented by:
H2O
2OH
HOOH
H2O2

28. The above model shows:
10 atoms
2 molecules
2CH3Cl
All of the above

40. Reflecting on STAAR What I know really well… 1. 2. 3. 4.
What I still need help with… 1. 2. 3. 4.

41. Today’s Schedule Do-Now Egg-stracting the Elements Counting Atoms
Formula Practice Dry Erase Boards
Reflecting on STAAR
Objectives:
Today we will…
8.5 (D) Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.
Dark Matter

42. Today’s Schedule 1. Do-Now Atomic structure independent practice
Atomic structure dry erase board practice
Objectives:
Today we will…
8.5(B) identify that protons determine an element's identity and valence electrons determine its chemical properties, including reactivity
8.5 (D) Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts.
Dark Matter