Balance Equations
__Fe + __O2 → ___Fe2O3
4Fe + 3O2 → 2Fe2O3
What family does this element belong to: Li
Alkali metals family
Boron has 5 protons,
6 neutrons and __ electrons
5
What is an atom
-the smallest unit of matter
What is an electron configuration
The exact location of all electrons in an atom
___Al4O2 +___H2 → __Al +___ H2O
1 Al4O2 + 2 H2 → 4 Al + 2 H2O
What family does this element belong to : Ca
worth double points
Alkali earth metals
Aluminum has 13 protons,
__ neutrons and 13 electrons
14
What is atomic radius
-The size of an atom
-The distance from nucleus to electrons
What is the electron configuration of this element: Be
1s2 2s2
___C3H8 + ___O2 →___CO2 + ___H2O
1C3H8+ 5O2 → 3CO2 + 4H2O
What family does this element belong to :W
Transition family
What are the outermost electrons of an atom called
worth double points
valence electrons
What are Isotopes
- Different versions of the same element
-Isotopes are formed by changing the number of neutrons in an atom.
What is the electron configuration of this element: F
worth double points
1s2 2s2 2p5
___C6H12O6 +___O2 → ___H2O +___CO2
1C6H12O6 + 6O2 → 6H2O + 6CO2
What family does this element belong to : At
Halogen Family
An atom that contains 27 protons and 31 neutrons. What element is it?
Co/Cobalt
What charge does an Anion and Cation have
worth double points
Anion= Negative charge -
Cation= Positive charge +
What is the electron configuration of this element: Si
1s2 2s2 2p6 3s2 3p2
___ CuSO4 +___KBr →__CuBr + ___Br2 + ___ K2SO4
worth double points
2 CuSO4 + 4 KBr →2CuBr + 1Br2 + 2 K2SO4
What family does this element belong to : Xe
Noble-gas family
list 3 characteristics of metals and non-metals
Metal= Shinny, Usually solid, Malleable, Ductile, Conductors of electricity and heat
Non-metals= Dull, Usually a gas, High ionization energy
Define Electronegativity
The ability of an atom to attract shared electrons
What is the electron configuration of this element: Na
1s2 2s2 2p6 3s1