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Muscular System

"The muscular system includes all the muscles in an organism's body and allows organisms to move. A lot of the muscles in the muscular system of vertebrates are controlled by the nervous system. There ...

Average Speed

"Speed refers to the rate at which an object travels. Unlike velocity, speed is a scalar quantity so direction does not matter. Average speed is calculated by dividing distance by time (e.g. miles/hou ...

Atomic Structure

"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 It is now outdated, but is still useful at the basic level.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 Radii - Ionic Radii

"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 ...

Atomic Orbitals

"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 ...

Atomic Number - Isotopes

"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 ...

Atomic Mass

"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

"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

"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’ ...

Mitosis

"Mitosis is a type of cell division found in eukaryotic cells. The products of mitosis are daughter cells that are genetically identical to the parent cell with the same set of chromosomes. The differ ...

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