Matter and Changes
Chemistry is the study of
What is Matter?
Chemical Bonding is the process of
What is the attractive force between atoms or ions of a compound?
These are the weakest intermolecular forces and are present in all molecules
What are London dispersion forces?
This gas law states that as pressure increases, volume decreases when at a constant temperature
What is Boyle's Law?
This is the process of using a balanced chemical equation to calculate amounts of substances in a reaction
What is stoichiometry?
The two main classifications of matter
What are pure substances and mixtures?
A Lewis dot Diagram shows
What are valence electrons?
This intermolecular force occurs between polar molecules that have both positive and negative ends
What are dipole-dipole forces?
This gas law states that the volume of a gas is directly proportional to it's temperature when pressure is constant
What is Charles's Law?
This number is found in front of a chemical formula in a balanced equation and tells how many moles are involved
What is a coeffcient?
The difference between Homogeneous and Heterogeneous mixtures
What are uniform and non-uniform substances?
This type of chemical bond forms when atoms share electrons
What is a covalent bond?
This special type of dipole-dipole attraction occurs when hydrogen is bonded to nitrogen, oxygen, or fluorine
What is hydrogen bonding?
According to this gas law, pressure and temperature are directly proportional when volume remains constant
What is Gay-Lussac's Law?
This step is always required before doing any stoichiometry calculation
What is balancing the chemical equation?
Physical and Chemical changes
What is a substance staying the same or changes?
This bond forms when one atoms transfers electrons to another
What is an ionic bond?
Water has a relatively high boiling point because of the strong intermolecular force known as this
What is hydrogen bonding?
This equation combines pressure, volume, temperature, and moles into one relationship: PV = nRT
What is the Ideal Gas Law?
How many moles of oxygen are needed to react completely with 2 moles of hydrogen to form water? (2H2 + O2 = 2H2O)
What is 1 mole of O2?
A student dissolves sugar in water. Is this a physical or chemical change?
What is a physical change?
According to VSEPR theory, what is the moleculal geometry of a molecule with four bonding pairs of electrons and no lone pairs around the central atom?
Worth Double points
What is a tetrahedral?
Among CH4, NH3, and H2O, this molecule has the strongest intermolecular forces
What is H2O(water)?
A gas occupies 2.0 L at 1.0 atm. if the pressure is increased to 4.0 atm and temperature remains constant, what is the new volume?
What is 0.50L? (Using Boyle's Law)
What is about 89.9 g of H2O?