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Chapter 13 chemistry

what is chemical bonding the joining of atoms to form a new substance
what is a chemical bond a bond that forms when 2 atoms join
how do chemical bonds form when electrons in atoms react
what can happen to electrons in an atom when a chemical bond forms they can be shaared, lost, or gained
where are electrons found outside the nucleus in layers called energy levels
how many electrons can the first energy level hold 2
how many electrons can the second and third energy levels hold 8
do all electrons in an atom interact to form bonds no, only valence electrons
what is a valence electron an electron in the outermost enegry level
what determines what kinds of bonds an atom can form how many valence elctrons it has
what is an atomic number tells you how many protons and electrons are in an atom of an element
do any elements have the same number of protons no
what does the number of protons in an atom equal number of electrons
if atom's atomic number is 14, how many valence electrons are in the 3rd level 4
when is an atom most stable when the outer energy level is full
why do atoms bond with one another to fill the outer energy level
what are ionic bonds bonds that form when valence electrons are transferred from 1 atom to the other
when is an atom most stable when the outer energy level is full
why do atoms bond with one another to fill the outer energy level
what are ionic bonds bonds that form when valence electrons are transferred from 1 atom to the other
what kind of charge does an electron have negative
what kind of charge do protns have positive
when is an atom neutral when the protons and electrons are equal
what is an ion a charged particle when the protons and electrons aren't even
how does an ion become positive when an atom loses electrons
what is needed for the attraction between the electron and the proton to be broken energy
what makes an ion become positive the forming of negative ions during ionic bonds
why is it easier to for nonmetals to gain electrons they have a fuller outermost energy level
what does the name of a negative ion formed from an element end in -ide
when does an atom release more energy when it can easily gain electrons
what are the elements in group 17 halogens
what does a halogen atom give off when it gains an electron lots of energy
why do ionic bonds form positive ions are attracted to negative ions
why is the compound that ions form neutral when the ions themselves are charged charges of 2 ions cancel out
what is a crystal a hard solid with flat faces and straight edges
what is a crystal lattice a repeating three-dimensional pattern of positive and negative ions
what are covalent bonds a bond that forms when atoms share electrons
what do covalent bonds form from atoms of nonmetals
how do electrons behave in covalent bonds they move between the two atoms
what are molecules atoms that join with each other by covalent bonds
what are most molecules made of atoms of 2 or more elements
what is the smallest piece of a covalent compound a molecule
what is a diatomic molecule a molecule made up of only 2 bonded elements
what is a diatomic element when the two bonded elements are the same element
in a diatomic molecule, what are each of the shared electrons counted as valence electrons
what determines howe many covalent bonds a molecule has the number of shared pairs of electrons
how many valence electrons does carbon have 4
what is a metallic bond bond formed by the attraction between positively charged metal ions and the electrons around the ions
what can valence lectrons do in a metallic bond they can move throughout the metal
why can a wire conduct an electric current when it is connected to an electrical source the valence electrons are free to move throughout the wire
why does metal not break no matter how the shape is altered atoms can be rearranged because electrons move around freely, the valence electrons are constantly moving around the metal ions, and the movement maintains the metallic bond
what is ductility the ability to be shaped into long, thin wires
what is malleability the ability to be hammered into thin sheets
Created by: jeremyb



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