Combustion
What is Combustion?
A chemical process or a reaction between Fuel ( Hydrocarbon) and Oxygen .
what is a Bohr Model?
postulates that electrons orbit the nucleus at fixed energy levels.
what is a periodic table ?
A tabular array of the chemical elements organized by atomic number
Define lewis structure.
diagrams that describe the chemical bonding between atoms in a molecule.
What are polyatomic ions?
an ion composed of more than one atom.
What is the difference between Endothermic and Exothermic?
Exothermic : release of Heat
Endothermic: absorb heat
what is a proton and neutron ?
proton: a subatomic particle with a positive electric charge.
Neutron:a type of subatomic particle with no charge
what are valence electrons ?
These electrons are the farthest from the nucleus and therefore the least firmly held by the atom. They participate in bonding and chemical processes.
what is solubility and conductivity?
Conductivity is the measure of the ease at which an electric charge or heat can pass through a material. Solubility is a property referring to the ability for a given substance, the solute, to dissolve in a solvent.
charges when forming ions .
Cations form from the loss of electrons and have a positive charge while anions form through the gain of electrons and have a negative charge.
Chemical Potential Energy is converted into Kinetic Energy when ...
bonds break and distances change
What is emission Spectra ?
the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains.
Lewis Dot For Elements
consists of the chemical symbol for an element surrounded by dots that represent its valence electrons.
what is the octet rule?
the tendency of atoms to prefer to have eight electrons in the valence shell.
charges to criss cross .
The charge on the positive ion becomes a subscript on the negative ion; the charge on the negative ion (ignoring the minus sign) becomes a subscript on the positive ion.
What three ways are can heat transfer?
conduction: Transfer of energy from one molecule to another
Convection: movement of Heat by a fluid such as water or air
Radiation: the transfer of heat by electromagnetic waves.
what is an orbital notation?
Orbital notation is a drawing of the electron configuration. It is very useful in determining electron. pairing and thus predicting oxidation numbers.
where are the metal and nonmetals located at ?
The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line.
what is the difference between a polar and non-polar ?
Polar molecules have a uniform distribution of electron density. A non polar molecule results from an unequal distribution of electron density.
Prefixes in covalent meaning.
the number of that element in the molecule.
During Combustion , Oxygen reacts with fuel to produce ...
Carbon dioxide and Water
What is the difference between Atomic mass and number ?
what are all 4 periodic trends?
Major trends are electronegativity, ionization energy, electron affinity, and atomic radius.
how do electrons transfer or share?
conduction, friction, and polarization.
using parentheses in naming transition metal.
If a metal can form cations with more than one charge, the charge is indicated by roman numerals in parentheses following the name of the metal.