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Elem and Compounds

Learning the elements and compounds

QuestionAnswer
Conservation of mass The law of the conservation of mass, or the principle of mass conservation, states that any system closed to all transfers of matter and energy.
Compound A thing that is composed of two or more seperate elements; a mixture.
Molecule a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Covalent Compound A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. The stable balance of attractive and repulsive forces between atoms when they share electrons is known as covalent bonding. ...
Ionic Compound In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds.
Lewis dot structure Are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
Substance A substance is matter that has the same fixed composition and properties.
Precipitate When some solutions are mixed, a chemical reaction occurs forming a solid.
Solvent The substance that dissolves the solute is the solvent.
Solution Another name for a homogeneous is a solution.
Homogeneous Mixture Contains two or more substances that are evenly mixed on a molecular level but are still not bonded together \.
Heterogeneous Mixture In chemistry, a mixture is a material system made up of two or more different substances which are mixed but are not combined chemically.
Solute In science, a solute is the substance that is dissolved to form a solution.
Vaporization When a liquid changes into a gas.
Condensation When a gas changes into a liquid.
Sublimation A solid changes directly into a gas
deposition When a gas changes into a solid.
Physical Change Any property used to characterize matter and energy in their interactions.
Chemical Change A property used to characterize materials in reactions that change their identity.
Created by: rvega
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