Trends
What is the periodic table arranged by?
Atomic Number
Name 4 properties of nonmetals
Brittle
Nonconductive
Not reactive with acid
Insulators
Dull colors
What does it mean about sharing of electrons if something is polar?
They are shared unequally
What happens to valence electrons moving down a group?
They stay the same
Name 2 similarities between metalloids and metals
Luster
Reactive with acid
type of bond
What type of bond shares electrons, and which type transfers?
Covalent: Shares
Ionic: Transfers
Dimitri Mendeleev
What is the electronegativity difference between polar and nonpolar covalent bonds?
Nonpolar: 0-0.4
Polar 0-0.4
State: The PHASES in which metals conduct, and how they do so.
The PHASES in which IONIC COMPOUNDS conduct, and how they do so.
Metals: Solid and Liquid, Mobile sea of electrons
Ionic: Liquid ONLY, Mobile Ions
What happens to electron shells moving down a group?
They increase by 1
What are the two bond compositions for ionic bonds? HINT: Think about charges for the second
Metal-Nonmetal
Cation-Anion
What is the difference between malleability and ductility?
Ductile: Dan be drawn into a wire.
What happens to electron shells moving across a group?
they stay the same
Which bond is polar? H2O or BH3?
H20
Name the following compound: C7H10
heptacarbon decahydride