anion is a ____ charge
Negative
Define Atom:
smallest unit of an element that retains the properties of that element
how many moles are in 63.55 g/mol of copper
1
Au
Gold
What is the mass of KNO3
101.094g
Cation is a ________ charge
Positive
The Nucleus what to things does it hold
Protons & Neutrons
How many moles of zinc are in 3.15 x 1023 atoms of zinc?
0.523 moles
Ne
Neon
what is Mr. Hughes favorite baseball team
Chicago White sox
what does a + sine mean
This atom has lost one electron (+1)
The electrons cloud cover most of the atoms:
Volume
AVOGADRO’S NUMBER
6.022x10^23
O
Oxygen
Draw a model of the nucleus of a boron atom label the protons and neutrons
draw on the board
define Isotopes
atoms with the same number of protons (same element), but different number of neutrons.
What is the name of the top number
Mass number
how many moles are in 40.0 grams of water
show your work on the board
2.22g
Cl
Chlorine
Hg
Mercury
ATOMS
Differ by number of_______
IONS
Differ by number of ________
ISOTOPES
Differ by number of ________
Atoms, Electros, Neutrons
Atomic number
mass number
number of protons
53,127,53
how many grams are in 3.7 moles of Na2O
show work on board
229.21
Fe
Iron
Tell me the
Protons
Neutrons
Electrons
92,146,92