Gases
760 Torr are equal to 1 ____________________
Atmosphere (ATM)
What does pH stand for?
Power of Hydrogen or Potential Hydrogen
The substance or substances dissolved into a solution is called...
What is activation energy?
The energy required to initiate a chemical reaction
How many valence electrons does each atom want to be happy(stable)?
(except hydrogen and helium)
8
According to Charles' law, if temperature increases, volume _______________.
Increases
A liquid with a pH of 9.5 will be basic or acidic?
Basic (alkaline)
Polar
Which has a higher entropy - a gas or a solid?
A gas
All atoms in the same element have the same number of _____________.
Protons
What is vapor pressure?
The pressure of a gas that is in contact with it's liquid form (or a reasonable description of this)
Do acids donate hydrogens or accept hydrogens?
Donate
If temperature increases, the solubility of solid solutes in a solution will _____________.
Increase
If a reaction is endothermic, will the change in enthalpy(H) be positive or negative?
Positive
A chemical bond made by sharing electrons is called _____________
a covalent bond
What are standard temperature and pressure?
1 ATM & 0 degrees Celcius
What are polyphonic acids?
Acids that can donate more than 1 hydrogen
The standard unit of concentration, defined as moles of solute / liters of solution is __________________
Molarity
What is the 2nd law of Thermodynamics?
The entropy of the universe can never decrease, it must aways stay the same or increase
What do the columns in the periodic table tell us about each element in that column?
How many valence electrons they have
What is the Ideal Gas Law?
PV = nRT
What is an amphoteric compound? (Ex. water)
A compound that can act as either an acid or a base, depending on what it is reacting with.
If compounds form solids that fall out of solution, instead of dissolving in solution, that is known as_____________.
Precipitation
What is the definition of enthalpy?
A measure of a chemical system's potential energy
How many molecules are in a mole?
(Avogadro's number)
6.02 x 1023