The Periodic Table
atomic mass - the atomic number = the number of neutrons
Key Terms:
Isotopes
atoms of the same element that have a different number of electrons
Atomic Number
the number of protons as well as the number of electrons
Element
specific type of atom
Mixtures
two or more substances that are not chemically bonded together
Molecules
consists of two or more atoms of a single same element or different elements
Compound
consists of two or more different elements
Molecular Compound
is a compound made up of molecules, held together by chemical bonds. These molecules
are neutral, meaning they have the same number of protons and electrons
Diatomic Molecules
diatomic molecules are the simplest molecular compounds, consisting of two atoms
Conservation of mass
the amount of mass at the start of a reaction will equal the amount of mass after the
reaction
Ion
is defined as an atom or molecule that has gained or lost one or more of its valence
electrons, giving it a net positive or negative electrical charge.
Covalent Bonding
A covalent bond is a chemical bond that involves the sharing of electrons to form electron
pairs between atoms. The atoms share electrons to achieve a stable balance
Ionic Bonding
gain or give away an electron
Ionic bonding occurs when one atom transfers one or more valence electrons to another
atom, creating ions with different charges
Combustion Reactions - incomplete and complete
Complete:
The Periodic Table 1
, Hydrogencarbon Fuel + Oxygen → Carbon Dioxide + Water
Incomplete:
water + carbon dioxide → carbon monoxide and/or carbon (soot) in addition to water
Balancing Chemicals Equations
1. Determine the number of atoms of each element on both the reactant and product side
2. Add coefficients till needed
Drawing electron transfers
Shell Configuration
Chemical Reaction
bonds are broken
Chemical Process
same atoms, different substances
Subscripts
are the little numbers that sit on the bottom right hand side of the element and tell us how
many of those atoms there are
Coefficient
is the big number in front of the element or molecule that tells u how many molecules there
are
Common physical properties used to differentiate matter:
Malleability
how easily something can be flattened, shaped or pressed
Magnetism
whether or not something is magnetic
Boiling Point and Melting Point
the temperature at which something boils or melts
Solubility
how easily something dissolves in another substance
Common Chemical Properties used to differentiate matter:
Flammability
Reactivity
Physical Change:
The Periodic Table 2
atomic mass - the atomic number = the number of neutrons
Key Terms:
Isotopes
atoms of the same element that have a different number of electrons
Atomic Number
the number of protons as well as the number of electrons
Element
specific type of atom
Mixtures
two or more substances that are not chemically bonded together
Molecules
consists of two or more atoms of a single same element or different elements
Compound
consists of two or more different elements
Molecular Compound
is a compound made up of molecules, held together by chemical bonds. These molecules
are neutral, meaning they have the same number of protons and electrons
Diatomic Molecules
diatomic molecules are the simplest molecular compounds, consisting of two atoms
Conservation of mass
the amount of mass at the start of a reaction will equal the amount of mass after the
reaction
Ion
is defined as an atom or molecule that has gained or lost one or more of its valence
electrons, giving it a net positive or negative electrical charge.
Covalent Bonding
A covalent bond is a chemical bond that involves the sharing of electrons to form electron
pairs between atoms. The atoms share electrons to achieve a stable balance
Ionic Bonding
gain or give away an electron
Ionic bonding occurs when one atom transfers one or more valence electrons to another
atom, creating ions with different charges
Combustion Reactions - incomplete and complete
Complete:
The Periodic Table 1
, Hydrogencarbon Fuel + Oxygen → Carbon Dioxide + Water
Incomplete:
water + carbon dioxide → carbon monoxide and/or carbon (soot) in addition to water
Balancing Chemicals Equations
1. Determine the number of atoms of each element on both the reactant and product side
2. Add coefficients till needed
Drawing electron transfers
Shell Configuration
Chemical Reaction
bonds are broken
Chemical Process
same atoms, different substances
Subscripts
are the little numbers that sit on the bottom right hand side of the element and tell us how
many of those atoms there are
Coefficient
is the big number in front of the element or molecule that tells u how many molecules there
are
Common physical properties used to differentiate matter:
Malleability
how easily something can be flattened, shaped or pressed
Magnetism
whether or not something is magnetic
Boiling Point and Melting Point
the temperature at which something boils or melts
Solubility
how easily something dissolves in another substance
Common Chemical Properties used to differentiate matter:
Flammability
Reactivity
Physical Change:
The Periodic Table 2
