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Video Química
"When naming acids, there are several guidelines that must be followed. The rule for naming acids depends on whether the anion contains oxygen. If the anion does not contain oxygen, acid is named with ...
Video Biología
"The Bohr model is a simple model of atomic structure. It is now outdated, but is still useful at the basic level. An atom has a central core called its nucleus which contains its protons (positively ...
"Atomic and ionic radii are distances away from the nucleus or central atom that have different periodic trends. Atomic is the distance away from the nucleus. Atomic radius increases going from top to ...
Video Física
"Atomic orbitals are regions of space in which electrons can be found. Each orbital can fit two electrons and different orbitals have different shapes. The s sub-level has one spherically shaped orbit ...
"Every element has a unique atomic number. The atomic number specifies how many protons an element has in its nucleus. In the periodic table of the elements, elements are arranged in order of ascendin ...
Video Química
"Molarity and molality are units of concentration. Molarity measures concentration in terms of moles per liter. A one molar solution has one mole of solvent for every one liter of solution. Molality, ...
Video Química
"The molar mass of a substance is the mass of one mole of that substance. Because of the nature of the mole, the atomic mass of an element in atomic mass units is equal to the molar mass of that subst ...
Video Física
"An element’s atomic mass is the mass of one atom of that element, measured in atomic mass units (amu). An element’s atomic mass in amu is equal to its molar mass in g/mol." Fuente: BrightStormAtomic ...
"Mixtures are composed of pure substances and elements, but unlike compounds these substances retain their own chemical identities and properties. Mixtures can be homogeneous or heterogeneous. Homogen ...
"Atomic emission spectra are unique spectra of light emitted by an element when electricity is run through it or when it is viewed through a prism. Because they are unique, they can act as an element’ ...
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