Atoms and Molecules (2)A
Matter cannot be created or destroyed, it can only change forms
What is the Conservation of Mass?
Electrons furthest from the atom's nucleus- electrons in the highest energy level.
What are valence electrons?
A reaction that changes a molecule into its constituent elements.
What is a decomposition reaction?
The substance that is being dissolved.
What is a solute?
A reaction whereby energy is considered a product of the reaction.
What is an exothermic reaction?
A substance that cannot be broken down into smaller parts.
What is an element?
The rule that states that most atoms strive to get attain at least 8 valence electrons.
What is the octet rule?
A reaction that starts with 1 or 2 elements and produces 1 compound.
What is a formation reaction?
Water is this type of compound with a fractional positive charge on its hydrogen atoms and a partial negative charge on its oxygen atom.
What is polar covalent?
What is change in enthalpy or enthalpy?
Substances that can be decomposed into elements by chemical means.
What is a compound?
Consists of the atom's symbol and a number of dots surrounding- the dots representing the number of valence electrons in the atom.
What is a Lewis structure?
A reaction in with 02 is added to a compound containing carbon and hydrogen, producing CO2 and H2O.
What is a complete combustion reaction?
The maximum amount of solute that can dissolve in a given amount of solvent.
What is solubility?
The strength of a chemical bond.
What is the bond energy?
Who is John Dalton?
A measure of how strongly an atom attracts extra electrons to itself.
What is electronegativity?
6.02 x 1023
What is 1 mole or Avogrado's number?
The number of moles of solute per kilogram of solvent.
What is molality?
A quantity that depends only on the final destination and not the way we get to that destination.
What is a state function?
A compound that contains at least one metal and at least one non metal element.
What is an ionic compound?
When atoms share two electron pairs.
What is a double bond?
The atomic mass of an atom in grams of of will give you this.
What is the mass of 1 mole of the atom.
The phenomenon that when you add salt or any solute to a solvent, the resulting solution has a lower freezing point.
What is freezing-point depression?
The energy necessary to start a chemical reaction.
What is activation energy?