2. O2 C6H12O6 H2O CO2 H2 Na OH K CH4 NaCl C8H18 Ca C2H6O Co O3
Atom / Molecule / Element / Compound Practice
O2 C6H12O6 H2O
CO H Na
OH K CH4
NaCl C8H Ca
C2H6O Co O3
molecule
compound
compound
Element / atom
compound
molecule
Element / atom
compound
compound
Element / atom
compound
compound
Element / atom
compound
molecule

3. attraction force holding
Oct 29 / Act B17
Modeling Molecules
LEARNING TARGET: I can construct models of molecules by combining different atoms and explain how atoms combine to form a variety of different molecules with various atom arrangements
CH Q
How do atoms combine to form molecules?
VOCAB:
chemical bond
attraction force holding
atoms together

4. Periodic Table Patterns –
Atomic mass:
- The mass increases as you go left to right
- The mass increases as you go down the table
- As the mass increases, so does the size of the atom
Reactivity: groups one and two
- The reactivity increases as you go left to right
- The reactivity increases as you go down the table
As the mass of the atom increases, so does the reactivity!

5. Periodic Table Patterns – groups eight
Atomic mass:
- The mass increases as you go down the table
- As the mass increases, so does the size of the atom
Reactivity:
- The reactivity decreases as you go down the table
As the mass of the atom increases, the reactivity decreases!

6. PROCEDURE AND DATA
MATERIALS:
PROCEDURE: Read on pg. B and summarize
DATA: WS Periodic table
Notes in Journal

7. POST DISSCUSSION:
What information do the models show about atoms, elements, and molecules?
how many bonds an atom of an element can make
(H = 1, O = 2, N = 3, C = 4)
2. Given that nitrogen (N) forms three (3) bonds with hydrogen (H) to make NH3, how many hydrogen (H) atoms do you think will bond to an atom of phosphorus (P)?
also 3 - because P is in same Group/Family as N

8. Single Bond versus Double Bond

9. - Discuss and answer Q 3-7 on pg. B- 33
ANALYSIS
- Discuss and answer Q 3-7 on pg. B- 33
ANS CH Q
How do atoms combine to form molecules? A:
chemical bonds between atoms form molecules
HOMEWORK
1. Finish Analysis Qs