Show:
Periodic Table
Elements
Atoms
Chemical Bonds
Dot Diagram/Oxidation
100
What are the rows on a periodic table called?
energy levels or periods or shells
100
What is the lightest element?
hydrogen
100
What is the positively charged particle called?
Proton
100
What electrons are involved in chemical bonds?
valence electrons
100
Draw the dot diagram for Mg.
Mg:
200
How are the elements on a periodic table arranged?
by their atomic number
200
What make up elements?
atoms
200
Where are protons and neutrons located?
the nucleus
200
What bond is formed when electrons are transferred between atoms?
ionic bond
200
Draw the dot diagram for He
He:
300
How many isotopes does the element silver have?
2
300
What is the only metal that is a liquid?
Mercury
300
What is the negatively charged particle called?
electron
300
What bond is formed when electrons are shared between atoms?
covalent bond
300
Draw the dot diagram for P
. :P:
400
What are carbon-12 and carbon-13 examples of?
isotopes
400
What groups of elements are the least reactive?
noble gases
400
How many possible electrons are in the first energy level?
2
400
What is a double bond?
when two valence electrons are shared
400
Prove how the oxidation numbers of H2O add up to zero
O H H 2- 1+ 1+ = 0
500
What elements don't create chemical bonds?
Noble gases
500
What elements have the properties of metals and nonmetals?
metaloids
500
What is formed when an atom gains or loses an electron?
an ion
500
What is a group of atoms joined by covalent bonds called?
a molecule
500
Prove the oxidation of CO2
C O O 4+ 2- 2- =0