Unit 1
Density Formula
What is Mass / Volume
Mass of reactants = Mass of Products
What is Conservation of Mass
Energy Level are associated with (Numbers or Letters)
What is Numbers
Name for electrons in the highest energy level
What is Valence Electrons
2 types of ions & their charges
What is a
Cation(+) & an Anion (-)
How many cm are in 5m
What is 500
2 or more elements chemically cobined
What is a Compound
Number of protons for a specific element
What is Atomic Number
The distance form the nucleus to the outermost valencec electrons
What is Atomic Radius
Electrons are closer to one atom than the other
What is a Plolar Covalent Bond
How many sig. fig's are in 0.002100
What is 4
Substance not uniform throughout Ex) Cereal & Salad
What is a Heterogeneous Misture
The sum of protons and neutrons for a specific atom
What is Mass Number
The way in which atomic radius increases
What is Down/Left
Electrons are in the middle of 2 atoms
What is a Nonpolar Covalent Bond
2kg = __g
What is 2,000g
Heat content of a system
What is Enthalpy
The average mass for a specific element
What is Atomic Mass
The amount of energy needed to remove an electron from an atom
What is Ionization Energy
The tendency of an atom to attract electrons
What is Electronegativity
Percentage Formula
What is
Actual Value - Measured Value / Actual Value * 100%
A measure of disorder or randomness
What is Entropy
Location of electrons outside the nucleus
What is an Orbital
The force of attraction between protons & electrons, and depends on distance and charges
What is Coulombic Attraction
_________ take electrons from the ______ forming an ionic bond
What is Non-metals & Metals