Atomic Structure & Periodic Trends
The center of an atom, where protons and neutrons are found
nucleus
A bond where electrons are shared between atoms
covalent
A chemical reaction must occur in order to follow the law of conservation of mass.
balanced
This phase change goes from solid directly to gas
sublimation
This type of electromagnetic wave has the longest wavelength
radio
This subatomic particle has a negative charge
electron
The number of carbon bonds usually formed
4
The number placed in front of a chemical formula in an equation
coefficient
According to Boyle's law, pressure and volume have this relationship
inverse
Visible light is arranged in this order from longest to shortest
red ----> violet
elements in the same column (group) have the same number of these
valence electrons
Water is considered this type of molecule because electrons are not equally shared
polar
The reactant that gets used up first in the reaction
limiting reactant
If temperature increases while volume stays constant, pressure does this.
increases
As the wavelength increases, this decreases
frequency
As you move across the periodic table from left to right, atoms generally become this in size.
smaller
A bond where electrons are transferred from one atom to another
ionic
This type of reaction occurs when one compound breaks apart into simpler substances
decomposition
The temperature at which all molecular motion theoretically stops
absolute 0, 0 K
The visible light with the highest energy
violet
This family is very reactive and is found in group 1
alkali metals
The force that causes water molecules to stick together (type of bonding)
hydrogen bonding
How many moles of water form if 2 moles of H2 react?
2H2 + O2 ----> 2H20
2 mols
Why do real gases deviate from ideal gas behavior at high temperatures
intermolecular forces
When electrons absorb energy and move to a higher energy level, they become this.
excited