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homogeneous mixture has the same uniform appearance and composition throughout. . Many homogeneous mixtures are commonly referred to as solutions

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Element - A component of a whole or one of the parts into which a whole may be determined by analysis.
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One of a class of substances that cannot be separated into simpler substances by chemical means.

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Chemical Change/Reaction:involves making or breaking of bonds between atoms.

reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

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Phase - a distinct and homogeneous form of matter (i.e., a particular solid, liquid, or gas) separated by its surface from other forms.

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Valance - an electron that is associated with an atom

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Mixture- a substance made by mixing other substances together

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pure substance- substances that are made of only one type of atom or molecule

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Periodic Table of Elements : is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties.

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Product- an article or substance that is manufactured or refined for sale.

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Neutron-A subatomic particle that has the same mass as a proton but without an electrical charge. Present in all atomic nuclei except those of ordinary Hydrogen.

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Nucleus- a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.

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Chemical Equation: symbolic representation of a chemical reaction in the form of symbols and formulate, wherein the reactant entities are given on the left-hand side and the product entities on the right hand side.

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Compound- a thing that is composed of two or more separate elements; a mixture.

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A Heterogenous mixture is made of different substances that remain physically separate.

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Ionic bond- A chemical bond that generates two oppositely charged ion

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Electron-  a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids

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Ionic compound- A chemical compound comprising ions held together by electrostatic forces termed ionic bonding.

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Atomic Mass:  The mass of an atom of a chemical element expressed in atomic mass units.

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Matter - physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.

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Law of Conservation of Matter- The law that matter can not be destroyed or created, only changed.

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mulecule- a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction

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Atomic number- the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

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Chemical Bond: a mutual attraction between two atoms resulting in redistribution of their outer electrons.

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Chemical Property- property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed

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Atom~the smallest component of an element having the chemicalproperties of the element, consisting of a nucleus containingcombinations of neutrons and protons and one or more electronsbound to the nucleus by electrical attraction; the number ofprotons determines the identity of the element.

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Organic compound- any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon.

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Covalent bond: A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

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Chemical change/reaction : The change of substances into other substances