Periodic Trends
What is the name of the element found in Group 13, Period 3 on the periodic table?
Aluminum
What unit is used to count Atoms and Particles?
A mole
What type of elements do covalent bonds usually form between, Metals or Nonmetals?
Nonmetals
What is the number placed in front of the Chemical Equation?
Coeffient
What energy level is filled first in every atom?
1s
What is the periodic trend for electronegativity?
Increases going left to right, and decreases going down.
What value, found on the periodic table, is used to convert grams to moles?
Atomic Mass/Molar Mass
What term describes a covalent bond where the electrons are shared equally?
Nonpolar Covalent Bond
What law states that matter cannot be created nor destroyed?
Law of Conservation of Mass
What is the maximum number of atoms that can be in the first ring?
2
Rank the following elements by increasing atomic radius: Aluminum, Oxygen, Potassium, Carbon
Oxygen < Carbon < Aluminum < Potassium
What is this number called? 6.02 x 1023
Avogadro's Number
What type of covalent bond holds two oxygen atoms together?
Double Covalent Bond
How many oxygen atoms are in the product? 4 Fe + 3 O₂ → 2 Fe₂O₃
6
What is the number of electrons that can fit in a p sublevel?
6
As nuclear charge increases over a period, what decreases?
Atomic Radius
What is the mass of 1.5 × 10²⁴ molecules of carbon dioxide?
110 (approx.)
What is a Lewis Dot Model?
A model that shows how atoms are connected in a molecule using shared electron pairs
What is the coefficient for H2O in this equation? CH₄ + 2 O₂ → ___ CO₂ + ___ H₂O
2
What is the full electron configuration of oxygen?
1s² 2s² 2p⁴
What explains why electrons in inner shells reduce the attraction felt by valence electrons?
Electron Shielding
What is the number of moles in 9.03 × 10²³ atoms of copper?
1.50 (approx.)
What type of molecule is CO2 considered due to its shape?
Nonpolar
Balancing the equation. Al(OH)3 + H2CO3 --> Al2(CO3)3 + H2O
2 Al(OH)3 + 3 H2CO3 --> 1 Al2(CO3)3 + 6 H2O
What is the number of unpaired electrons in nitrogen?
3