Name the Element
I have 78 protons. Who am I?
Platinum
What does the COLUMN number tell you about?
The number of VALENCE electrons
True or False: Hydrogen cannot bond with itself. Explain.
False: Hydrogen CAN bond with itself because it only takes 2 electrons to fill its first and last ring.
Draw the Lewis Dot structure of Fluorine (F). How many VALENCE electrons does Fluorine have?
Fluorine has 7 valence electrons.
Oxygen makes up about 65% of your body mass.
My atomic mass is about 115. Who am I?
Indium
What does the ROW number tell you about?
The number of RINGS
Carbon has 4 VALENCE electrons, who can it bond with. Name two elements.
Element must have 4 VALENCE electrons. 4+4=8
Draw the Lewis Dot structure or Neon. How many valence electrons does Neon (Ne) have?
Ne has 8 valence electrons
What element is used to "disinfect" drinking water?
Chlorine, Cl
When I bond with sodium (Na), I make table salt. Who am I and what's my atomic number?
Chlorine, 17
What does carbon look like as an ATOM (rings and electrons)?
Draw on the board
How many atoms of HYDROGEN can OXYGEN bond with? Explain.
Oxygen has 6 valence electrons. It needs 2 more electrons to fill its ring. 6+2=8
Draw the Lewis Dot structure of Magnesium (Mg). How many VALENCE electrons does it have?
Magnesium has 2 valence electrons.
What element do you and all organic life have in common?
Carbon
My atomic number is 7. Who am I and what is my EXACT atomic mass (yess decimals and everything)?
Nitrogen, 14.00674
What does sodium look like as an ATOM (rings and electrons) and how many valence electrons does it have?
Na, 1 valence electron
What does the term VALENCE electrons mean?
Number of electrons on the last or outer most ring.
Draw the Lewis Dot structure of Silicon (Si). How many VALENCE electrons does Silicon have?
Silicon has 4 valence electrons.
The paint of most homes built before 1978 have this toxic element.
Lead, Pb.
I have 3 rings and 5 VALENCE electrons, who am I?
Phosphorous, 15
Draw an ATOM that has 3 rings. How many valence electrons does it have?
Draw on the board
What is the goal of bonding? Draw a COMPLETE compound.
Goal: to fill up the last ring (2 or 8 electrons)
Choose your favorite element from your periodic table. What's its Lewis Dot structure.
Column number
When this element bonds with two hydrogens, it creates the smell of rotten eggs.
Sulfur (hydrogen sulfide or H2S)