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Chemistry Q2 Words

actual yield The quantity of a product that is obtained from a chemical reaction (as opposed to the calculated or theoretical yield).
Theoretical Yield Theoretical Yield is the quantity of a product obtained from the complete conversion of the limiting reactant in a chemical reaction. Theoretical yield is commonly expressed in terms of grams or moles.
percent yield Percent yield is calculated to be the experimental yield divided by theoretical yield multiplied by 100%.
pressure Pressure is a measure of the force applied over a unit area. Pressure often is expressed in units of pascals or pounds per square inch. In equations, pressure is denoted by the symbol 'P'.
volume Volume is the quantity of three-dimensional space occupied by a liquid, solid, or gas. Common units used to express volume include liters, cubic meters, gallons, milliliters, teaspoons and ounces. Many other units exist.
temperature Temperature is the property of matter which reflects the quantity of energy of motion of the component particles. There are several scales used to measure this value (e.g., Kelvin, Celsius, Fahrenheit).
STP STP corresponds to 273 K (0° Celsius) and 1 atm pressure. STP is often used for measuring gas density and volume.
molar volume Molar volume is the volume of one mole of a substance.
electron An electron is a negatively charged component of an atom. Electrons exist outside of and surrounding the atom nucleus. Each electron carries one unit of negative charge and has a very small mass as compared with that of a neutron or proton.
proton A proton is a component of an atomic nucleus with a mass defined as 1 and a charge of +1. The nucleus of a hydrogen atom. The H+ ion.
neutron The neutron is the particle in the atomic nucleus with a mass = 1 and charge = 0.
nucleus Nucleus means center. In chemistry, nucleus refers to the positively charged center of the atom containing protons and neutrons.
wavelength Wavelength is a property of a wave that is the distance between identical points between two successive waves. The distance between one crest (or trough) of one wave and the next is the wavelength of the wave.
frequency Frequency is the number of times a point on a wave passes a fixed reference point in one second. The SI unit for frequency is the Hertz (Hz).
full spectrum an array of ntities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors produced when sunlight is passed through a prism, comprising red, orange, yellow, gr
emissions spectrum Emission spectrum refers to the range of wavelengths emitted by an atom stimulated by either heat or electric current.
Pauli exclusion principle The Pauli exclusion principle states no two electrons can have the identical quantum mechanical state in the same atom. No pair of electrons in an atom can have the same quantum numbers n, l, ml and ms.
Hund's rule electrons spread out to fill consecutive shell space before returning to fill the other half of the previous
aufbau principle Electrons go into the subshell having the lowest possible energy. An orbital can hold at most 2 electrons obeying the Pauli exclusion principle.
Principle Energy Level The energy level denoted by the principal quantum number n. The first element in a period of the Periodic Table introduces a new principal energy level.
orbital Electron cloud having an energy state described by given values of the n, ℓ, and mℓ quantum numbers. An orbital can contain two electrons with paired spins and is often associated with a specific region of an atom.
Created by: Forrest3



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