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Science vocabulary

Exploring Creation w/ Chemistry - vocabulary (H - K)

Heat Energy that is transferred as a consequence of temperature differences
Hess's Law Enthalpy is a sate function and is therefore independent of path.
Heterogeneous catalysts Catalysts that are in a different phase than the reactants
Homogeneous catalysts Catalysts that have the same phase as at least one of the reactants
Homogenous mixture A mixture with a composition that is always the same no matter what part of the sample you observe
Homonuclear diatomic A molecule composed of two identical atoms
Hypothesis An educated guess that attempts to explain observations
Ideal gas A gas whose molecules (or atoms) are very small compared to the total volume of the gas, make elastic collisions with one another an well as the walls of the container, and have no attraction to one another
Incomplete combustion A reaction in which O₂ is added to a compound containing carbon and hydrogen, producing either CO or C along with H₂O
Indicator A substance that turns one color in the presence of acids and another color in the presence of bases
Insoluble Unable to dissolve
Intermediate state A complex formed in the process of a chemical reaction when reactants and products are interacting
Ion An atom that has gained or lost electrons and thus become electrically charged
Ionic compound A compound formed by ions
Ionization potential The amount of energy needed in order to take an electron away from an atom
Isotopes Atoms with the same number of protons but a different number of neutrons
Isotopes enrichment The process by which the abundance of one isotope in a element is increased. It is typically used to make the fuel for nuclear bombs.
Joule The metric unit for energy
Kelvin The absolute temperature scale: it is not possible to reach or go below 0 Kelvin
Kinetic energy Energy that is in motion
Kinetic Theory of Matter The theory that the atom or molecules which make up a substance are in constant motion, the higher the temperature, the greater their speed
Created by: Autumn Fairall



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