The Periodic Table/Periodic Trends
What is the octet/duet rule?
The octet rule is where the valence e- have to be added up to 8 valence e- , the only exception is helium which is referred to the duet rule.
What is a Polyatomic Ion ?
A Polyatomic Ion is an atom with more than 1 Atom.
When converting grams to moles do you divide or multiply
Divide
if pressure increases what happens to volume
volume decreases
What is the definition of Energy?
The ability to do work
What is shielding?
Core electrons in an atom practically block valence electrons.
What's the scientific name for bonding in chemicals?
Its called Electrostatic attraction.
When converting moles to grams do you divide or multiply
Multiply
are gas particles constantly moving or standing still
constantly moving
What is the law of conservation of energy?
Energy can neither be created nor destroyed, only changed.
What is Electronegativity?
An atom's ability to attract an electron to itself.
Why do atoms bond to form compounds?
They do it in order to achieve noble gas configuration.
what do you do before starting the equation
balance the equation
what has the least amount of space between its particles
solids
What is a calorie?
A calorie is the amount of energy needed to raise 1 gram of water by 1 degree Celsius
What does a higher Ionization Energy Indicate?
It indicates that the atom has a strong hold over it electrons, as if it was selfish
What are the 4 shapes in Molecular geometry?
Linear, bent , trigonal pyromidal, tetrahedral
what is a mole
a unit of measurement
what is Boyle's law
relationship between pressure and volume of gas inside
What does q=mc Delta T stand for?
Joules = Grams x J/gC x C
What is the trend for first Ionization Energies ?
IE increases as you move left to right because of more protons being added, As a result there is more attraction between the protons and e-'s, which requires more energy to remove the valence e-.
What is the chemical name for P2O5?
Diphosphorus pentoxide.
how many moles in 12 grams of NaCl
.205 moles
Solve for V2
T1:610 K
T2:365K
V1:1.12L
V2:?
V2: 0.67L
How much heat is required to raise the temperature of 200g of water from 20 degrees celsius to 95 degrees celsius?
62,700J