Physical vs. Chemical
Color is an example of which type of property?
Chemical (get pranked)
Physical
What are the names of the three subatomic particles that compose atoms? What are their charges? Where are they located in the atom?
Protons (+), neutrons (0), electrons (-)
protons and neutrons in the nucleus
electrons orbit around the nucleus
What is the purpose of a Lewis Dot Structures? Draw the Lewis Dot Structure for Rb?
To show an atom's valence electrons.
Draw on board
When a material undergoes a change that does NOT change its chemical composition, what type of change has occurred?
Physical
How do you determine the number of neutrons in a given atom's nucleus?
Atomic mass - atomic number (protons) = number of neutrons
Draw the lewis dot structure for Fe +2
draw on board
Define what is meant by "chemical properties".
A property of a substance that can only be observed or measured by changing the material's chemical composition.
What type of metal has a +2 charge when it forms an ion?
Alkaline earth metal
What is the purpose of an electron configuration?
Draw the electron configuration for Ag
To show ALL of an elements electrons
write on board
For wood, list a chemical property and a physical property.
Brown
Flammable
What is the name of the row that contains Am?
Actinide series
Write the electron configuration for Bi -3
write on board
Below is the chemical formula for the combustion of methane:
CH4 + O2 --> CO2 + H2O
What type of change did the methane undergo? Why?
Chemical change because its chemical composition was changed. It was turned into something new.
What are the 4 sublevels on the periodic table? How many orbitals are there in each sublevel?
s (1)
p (3)
d (5)
f (7)
Write the electron configuration for Pr +2
write on board