1Neutrons, electrons, and protons have what charge?
neutral, negative, positive
2mass number=
protons and neutrons
3atomic number is the
proton
4the protons and electrons in an uncharged element are
equal
5isotopes
are two atoms of an element that differ in number of neutrons
6valance electrons/ valence shell
the electrons on an elements outermost shell
7The chemical behavior of an atom is
mostly determined by the valence electrons
8Elements with a full valence shell
are chemically inert or not very reactive
9covalent bond
the sharing of a pair of valence electrons by two atoms
10 the sharing of a pair of valence electrons by two atoms
covalent bond
11In a covalent bond
the shared electrons count as part of each atom’s valence shell
12molecule
two or more atoms held together by covalent bonds
13Neutrons, electrons, and protons have what charge?
neutral, negative, positive
14The notation used to represent atoms and bonding is called a (ex H-H), This can be abbreviated further with a molecular formula (ex:H2)
structural formula
15
Covalent bonds can form between
atoms of the same element or different elements
16valence
bonding capacity
17bonding capacity
valence
18electronegativity
an atom’s attraction for the electrons in a covalent bond
19an atom’s attraction for the electrons in a covalent bond
electronegativity
20The more electronegative an atom is
the more strongly it pulls shared electrons toward itself
21nonpolar covalent bond
the atoms share the electron equally
22the atoms share the electron equally
nonpolar covalent bond
23polar covalent bond
one atom is more electronegative, and the atoms do not share
the electron equally
24one atom is more electronegative, and the atoms do not share
the electron equally
polar covalent bond
25when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom (weakest, temporary bond)
hydrogen bond
26ionic bonds
strip electrons from their bonding partners
27strip electrons from their bonding partners
ionic bonds
28after the transer of electrons during an ionic bond
both elements have charges
29A charged atom or molecule
ion
30ion
A charged atom or molecule
31An ionic bond is an attraction between an
anion and a cation
32A .... is a positively charged ion
An ... is a negatively charged ion
cation, anion
33Compounds formed by ionic bonds
ionic compounds, salts
34ionic compounds, salts
Compounds formed by ionic bonds
35The starting molecules of a chemical reaction
reactants
36reactants
The starting molecules of a chemical reaction
37The final molecules of a chemical reaction
products
38when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom (weakest, temporary bond)
hydrogen bond
39hydrogen bond
when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom (weakest, temporary bond)
40a substance that cannot be broken down to other substances by chemical reactions
element
41a substance consisting of two or more elements in a fixed ratio
compound