Lessons 1 & 2
The study of "the composition, structure, and properties of substances and the transformations that they undergo
What is Chemistry?
A system of organization for the elements where their positions are based on their atomic number and type.
What is the Periodic Table of Elements?
The organization of electrons around the nucleus of an atom
What is the electron configuration?
A group of two or more atoms linked by a chemical bond
What is a molecule?
The combined masses of each atom in a molecule
What is molecular mass?
A substance that is made of only one kind of atom
What is an element?
The vertical columns of the periodic table
What are groups?
The scientist who developed a model portraying electrons moving around the nucleus in orbits.
Who is Neils Bohr?
A chemical bond between two (generally similar) elements when one atom shares electrons with another atom
What is a covalent bond?
A group of atoms or molecules that total 6.022 x 10^23 that is a convenient conversion unit for chemistry calculations
What is a mole?
Two or more elements combined chemically
What is a compound?
What is atomic mass?
A region around the nucleus in which electrons are predicted to be found at any given point.
What is an electron cloud?
A chemical bond between two (generally dissimilar) elements when one atom gives electrons to the other atom.
What is an ionic bond?
Electron dot diagrams developed by Gilbert Newton Lewis in the early 1900s illustrate valence electrons in elements
What are Lewis structures?
A family of particles (as electrons, muons, and neutrinos) that experience no strong forces.
What is a lepton?
A variation of an element based on the number of neutrons in its nucleus
What is an isotope?
An electron found in the outermost orbit of an atom.
What are valence electrons?
*Daily Double*
A character written below the line of text. In chemistry this is a numeral of smaller type size and indicates the number of atoms of a particular element to create a compound or molecule.
What is a subscript?
This is the most stable number of electrons in chemical bonding
What is 8 electrons?
A subatomic particle that makes up protons and neutrons.
What is a quark?
*DAILY DOUBLE*
The formula for finding the number of neutrons in an atom
What is the atomic mass (protons + neutrons) - atomic number (protons) = neutrons
A region surrounding the nucleus of an atom.
What is energy level?
A molecule composed of two identical atoms
These are produced when atoms gain, donate, or share electrons in an attempt to have 8 electrons in their outer orbit.
What is a compound?