1. What is the formula for speed?
JUST DO IT
Daily Riddle
In Question
What is the formula for speed?

2. Today in your notebooks
Left side items
Right side items
States of matter BP
States of matter notes
Solid, liquid, gas HW
Bill Nye phases of matter
Phase changes graph
Molecular kinetic energy notes
Atom diagram, brainpop
Atoms notes
Element box calculations
Element box notes
P, N, E practice HW
Periodic table
PT groups/famillies, PT brainpop
PT notes
Atomic trends
Atomic trends notes
Compounds and molecules, BP
Bonding notes
Atomic arrangements
Arrangements notes

4. Arrangements
Isotope- atoms with different amounts of neutrons. The atomic mass shows the average of all isotopes
Electrons are found in the electron shells surrounding an atom
3) Electron shells are arranged as follows:
1st shell- 2 electrons
2nd shell- 8 electrons
3rd shell- 18 electrons
*** atoms will be stable if they have 8 electrons in shells 2 and up
4) Valence electron – the outer ring of electrons. These are the bonding electrons.
What is an isotope?
Where are electrons?
3) How are electrons arranged?
4) What is a valence electron?

6. Group 1
Group 2
Group 3
Group 15
Group 16
Group 17
1 valence
LOSE 1
+1 charge
2 valence
LOSE 2
+2 charge
3 valence
LOSE 3
+3 charge
5 valence
GAIN 3
-3 charge
6 valence
GAIN 2
-2 charge
7 valence
GAIN 1
-1 charge

7. Exit slip How many electrons can the first shell hold?
A. 1 B. 2 C. 3 D. 4
2. What is a valence electron?
Outside electrons B. First electron C. They bond with protons
D. They are special and live in the nucleus
3. How many electrons can the second shell hold?
A. 2 B. 8 C. 18 D. 32
4. What does the atomic number represent?
# of protons B. # of neutrons C. # of protons and neutrons D. # of protons minus electrons
5. What does the atomic mass represent?
A. # of protons B. # of neutrons C. # of protons and neutrons D. # of protons minus electrons

8. Bonding
MOLECULE: Atoms of a single element or different element joined together
COMPOUND: one or more molecules joined together
CHEMICAL BOND: An attraction between atoms, forms a chemical substance
-IONIC bond: a transfer of electrons. Breaks down into ions.
-COVALENT bond: a sharing of electrons. Breaks down into molecules
4) POLAR MOLECULE: a molecule with a positive and negative side
1) 2) 3) 4)

9. DETAILS

10. Common Ions
Ions-
Group 1 + Group 17
Group 2 + Group 16

11. Common compounds
Compounds
Methane = CH4
Ammonium = NH3
Water = H2O